Quick view Details GM Genuine GM 11610259 LS Cylinder Head Coolant Plug 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS3 LQ4 LM7 LC9 MSRP: Now: $15.99 Add to Cart Compare Quick view Details GM Genuine GM 12559505 Oil Fill Tube for LS1 LS2 LS6 Camaro Corvette Firebird G8 GTO 1997-2008 MSRP: Now: $16.99 Out of stock Compare Quick view Details GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover MSRP: Now: $149.95 Add to Cart Compare Quick view Details GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 MSRP: Now: $82.99 Add to Cart Compare Quick view Details GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 MSRP: Now: $99.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap MSRP: Now: $29.99 Choose Options Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 MSRP: Now: $162.99 Add to Cart Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 MSRP: Now: $459.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Details Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Details Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Quick view GM Genuine GM 11610259 LS Cylinder Head Coolant Plug 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS3 LQ4 LM7 LC9 Genuine GM 11610259 Cylinder Head Coolant Plug for LS Engines Fits all 1997-2013 LS-Based V8 Engines 4.8 5.3 5.7 6.0 6.2 7.0 OEM GM plug for the coolant port on LS cylinder heads next to the exhaust manifold flange. Comes with thread sealant... MSRP: Now: $15.99 Add to Cart Compare Quick view GM Genuine GM 12559505 Oil Fill Tube for LS1 LS2 LS6 Camaro Corvette Firebird G8 GTO 1997-2008 Genuine GM 12559505 Oil Fill Tube for LS1 LS6 LS2 Engines -Short style oil fill tube used on 2008-earlier LS car engines -Does not fit truck/suv engines -Cap not included Fits the following applications (Gasoline V8 models only): CADILLAC CTS... MSRP: Now: $16.99 Out of stock Compare Quick view GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover Genuine GM 12570427 Driver's Side Valve Cover Fits 1999-2008 GM LS-Based V8 Engines 4.8L 5.3L 5.7L 6.0L -Updated design helps eliminate oil consumption issues on many 2008-earlier LS car and truck engines. -New GM OEM Valve Cover -Includes Gasket and... MSRP: Now: $149.95 Add to Cart Compare Quick view GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 Genuine GM 12642655 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Driver's side valvecover Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake rocker arms Fits applications... MSRP: Now: $82.99 Add to Cart Compare Quick view GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 Genuine GM 12637684 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Passenger side valvecover (has hole for oil fill tube/cap) Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake... MSRP: Now: $99.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! MADE IN USA MSRP: Now: $29.99 Choose Options Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details GM Genuine GM 12559505 Oil Fill Tube for LS1 LS2 LS6 Camaro Corvette Firebird G8 GTO 1997-2008 MSRP: Now: $16.99 Out of stock Compare Quick view Details GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover MSRP: Now: $149.95 Add to Cart Compare Quick view Details GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 MSRP: Now: $82.99 Add to Cart Compare Quick view Details GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 MSRP: Now: $99.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap MSRP: Now: $29.99 Choose Options Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 MSRP: Now: $162.99 Add to Cart Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 MSRP: Now: $459.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Details Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Details Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Quick view GM Genuine GM 11610259 LS Cylinder Head Coolant Plug 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS3 LQ4 LM7 LC9 Genuine GM 11610259 Cylinder Head Coolant Plug for LS Engines Fits all 1997-2013 LS-Based V8 Engines 4.8 5.3 5.7 6.0 6.2 7.0 OEM GM plug for the coolant port on LS cylinder heads next to the exhaust manifold flange. Comes with thread sealant... MSRP: Now: $15.99 Add to Cart Compare Quick view GM Genuine GM 12559505 Oil Fill Tube for LS1 LS2 LS6 Camaro Corvette Firebird G8 GTO 1997-2008 Genuine GM 12559505 Oil Fill Tube for LS1 LS6 LS2 Engines -Short style oil fill tube used on 2008-earlier LS car engines -Does not fit truck/suv engines -Cap not included Fits the following applications (Gasoline V8 models only): CADILLAC CTS... MSRP: Now: $16.99 Out of stock Compare Quick view GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover Genuine GM 12570427 Driver's Side Valve Cover Fits 1999-2008 GM LS-Based V8 Engines 4.8L 5.3L 5.7L 6.0L -Updated design helps eliminate oil consumption issues on many 2008-earlier LS car and truck engines. -New GM OEM Valve Cover -Includes Gasket and... MSRP: Now: $149.95 Add to Cart Compare Quick view GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 Genuine GM 12642655 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Driver's side valvecover Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake rocker arms Fits applications... MSRP: Now: $82.99 Add to Cart Compare Quick view GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 Genuine GM 12637684 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Passenger side valvecover (has hole for oil fill tube/cap) Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake... MSRP: Now: $99.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! MADE IN USA MSRP: Now: $29.99 Choose Options Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover MSRP: Now: $149.95 Add to Cart Compare Quick view Details GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 MSRP: Now: $82.99 Add to Cart Compare Quick view Details GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 MSRP: Now: $99.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap MSRP: Now: $29.99 Choose Options Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 MSRP: Now: $162.99 Add to Cart Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 MSRP: Now: $459.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Details Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Details Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Quick view GM Genuine GM 11610259 LS Cylinder Head Coolant Plug 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS3 LQ4 LM7 LC9 Genuine GM 11610259 Cylinder Head Coolant Plug for LS Engines Fits all 1997-2013 LS-Based V8 Engines 4.8 5.3 5.7 6.0 6.2 7.0 OEM GM plug for the coolant port on LS cylinder heads next to the exhaust manifold flange. Comes with thread sealant... MSRP: Now: $15.99 Add to Cart Compare Quick view GM Genuine GM 12559505 Oil Fill Tube for LS1 LS2 LS6 Camaro Corvette Firebird G8 GTO 1997-2008 Genuine GM 12559505 Oil Fill Tube for LS1 LS6 LS2 Engines -Short style oil fill tube used on 2008-earlier LS car engines -Does not fit truck/suv engines -Cap not included Fits the following applications (Gasoline V8 models only): CADILLAC CTS... MSRP: Now: $16.99 Out of stock Compare Quick view GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover Genuine GM 12570427 Driver's Side Valve Cover Fits 1999-2008 GM LS-Based V8 Engines 4.8L 5.3L 5.7L 6.0L -Updated design helps eliminate oil consumption issues on many 2008-earlier LS car and truck engines. -New GM OEM Valve Cover -Includes Gasket and... MSRP: Now: $149.95 Add to Cart Compare Quick view GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 Genuine GM 12642655 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Driver's side valvecover Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake rocker arms Fits applications... MSRP: Now: $82.99 Add to Cart Compare Quick view GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 Genuine GM 12637684 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Passenger side valvecover (has hole for oil fill tube/cap) Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake... MSRP: Now: $99.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! MADE IN USA MSRP: Now: $29.99 Choose Options Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 MSRP: Now: $82.99 Add to Cart Compare Quick view Details GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 MSRP: Now: $99.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap MSRP: Now: $29.99 Choose Options Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 MSRP: Now: $162.99 Add to Cart Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 MSRP: Now: $459.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Details Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Details Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Quick view GM Genuine GM 11610259 LS Cylinder Head Coolant Plug 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS3 LQ4 LM7 LC9 Genuine GM 11610259 Cylinder Head Coolant Plug for LS Engines Fits all 1997-2013 LS-Based V8 Engines 4.8 5.3 5.7 6.0 6.2 7.0 OEM GM plug for the coolant port on LS cylinder heads next to the exhaust manifold flange. Comes with thread sealant... MSRP: Now: $15.99 Add to Cart Compare Quick view GM Genuine GM 12559505 Oil Fill Tube for LS1 LS2 LS6 Camaro Corvette Firebird G8 GTO 1997-2008 Genuine GM 12559505 Oil Fill Tube for LS1 LS6 LS2 Engines -Short style oil fill tube used on 2008-earlier LS car engines -Does not fit truck/suv engines -Cap not included Fits the following applications (Gasoline V8 models only): CADILLAC CTS... MSRP: Now: $16.99 Out of stock Compare Quick view GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover Genuine GM 12570427 Driver's Side Valve Cover Fits 1999-2008 GM LS-Based V8 Engines 4.8L 5.3L 5.7L 6.0L -Updated design helps eliminate oil consumption issues on many 2008-earlier LS car and truck engines. -New GM OEM Valve Cover -Includes Gasket and... MSRP: Now: $149.95 Add to Cart Compare Quick view GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 Genuine GM 12642655 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Driver's side valvecover Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake rocker arms Fits applications... MSRP: Now: $82.99 Add to Cart Compare Quick view GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 Genuine GM 12637684 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Passenger side valvecover (has hole for oil fill tube/cap) Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake... MSRP: Now: $99.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! 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MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... 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Quick view Details GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 MSRP: Now: $99.99 Add to Cart Compare Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap MSRP: Now: $29.99 Choose Options Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 MSRP: Now: $162.99 Add to Cart Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 MSRP: Now: $459.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Details Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Details Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Quick view GM Genuine GM 11610259 LS Cylinder Head Coolant Plug 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS3 LQ4 LM7 LC9 Genuine GM 11610259 Cylinder Head Coolant Plug for LS Engines Fits all 1997-2013 LS-Based V8 Engines 4.8 5.3 5.7 6.0 6.2 7.0 OEM GM plug for the coolant port on LS cylinder heads next to the exhaust manifold flange. 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MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous MSRP: Now: $72.99 Add to Cart Compare Quick view Details Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap MSRP: Now: $29.99 Choose Options Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 MSRP: Now: $162.99 Add to Cart Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 MSRP: Now: $459.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Details Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Details Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Quick view GM Genuine GM 11610259 LS Cylinder Head Coolant Plug 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS3 LQ4 LM7 LC9 Genuine GM 11610259 Cylinder Head Coolant Plug for LS Engines Fits all 1997-2013 LS-Based V8 Engines 4.8 5.3 5.7 6.0 6.2 7.0 OEM GM plug for the coolant port on LS cylinder heads next to the exhaust manifold flange. Comes with thread sealant... MSRP: Now: $15.99 Add to Cart Compare Quick view GM Genuine GM 12559505 Oil Fill Tube for LS1 LS2 LS6 Camaro Corvette Firebird G8 GTO 1997-2008 Genuine GM 12559505 Oil Fill Tube for LS1 LS6 LS2 Engines -Short style oil fill tube used on 2008-earlier LS car engines -Does not fit truck/suv engines -Cap not included Fits the following applications (Gasoline V8 models only): CADILLAC CTS... MSRP: Now: $16.99 Out of stock Compare Quick view GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover Genuine GM 12570427 Driver's Side Valve Cover Fits 1999-2008 GM LS-Based V8 Engines 4.8L 5.3L 5.7L 6.0L -Updated design helps eliminate oil consumption issues on many 2008-earlier LS car and truck engines. -New GM OEM Valve Cover -Includes Gasket and... 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MSRP: Now: $99.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! 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MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap MSRP: Now: $29.99 Choose Options Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 MSRP: Now: $162.99 Add to Cart Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 MSRP: Now: $459.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Details Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Details Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Quick view GM Genuine GM 11610259 LS Cylinder Head Coolant Plug 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS3 LQ4 LM7 LC9 Genuine GM 11610259 Cylinder Head Coolant Plug for LS Engines Fits all 1997-2013 LS-Based V8 Engines 4.8 5.3 5.7 6.0 6.2 7.0 OEM GM plug for the coolant port on LS cylinder heads next to the exhaust manifold flange. Comes with thread sealant... MSRP: Now: $15.99 Add to Cart Compare Quick view GM Genuine GM 12559505 Oil Fill Tube for LS1 LS2 LS6 Camaro Corvette Firebird G8 GTO 1997-2008 Genuine GM 12559505 Oil Fill Tube for LS1 LS6 LS2 Engines -Short style oil fill tube used on 2008-earlier LS car engines -Does not fit truck/suv engines -Cap not included Fits the following applications (Gasoline V8 models only): CADILLAC CTS... MSRP: Now: $16.99 Out of stock Compare Quick view GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover Genuine GM 12570427 Driver's Side Valve Cover Fits 1999-2008 GM LS-Based V8 Engines 4.8L 5.3L 5.7L 6.0L -Updated design helps eliminate oil consumption issues on many 2008-earlier LS car and truck engines. -New GM OEM Valve Cover -Includes Gasket and... MSRP: Now: $149.95 Add to Cart Compare Quick view GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 Genuine GM 12642655 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Driver's side valvecover Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake rocker arms Fits applications... MSRP: Now: $82.99 Add to Cart Compare Quick view GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 Genuine GM 12637684 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Passenger side valvecover (has hole for oil fill tube/cap) Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake... MSRP: Now: $99.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! MADE IN USA MSRP: Now: $29.99 Choose Options Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 MSRP: Now: $162.99 Add to Cart Compare Quick view Details GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 MSRP: Now: $459.99 Add to Cart Compare Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Details Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Details Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Quick view GM Genuine GM 11610259 LS Cylinder Head Coolant Plug 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS3 LQ4 LM7 LC9 Genuine GM 11610259 Cylinder Head Coolant Plug for LS Engines Fits all 1997-2013 LS-Based V8 Engines 4.8 5.3 5.7 6.0 6.2 7.0 OEM GM plug for the coolant port on LS cylinder heads next to the exhaust manifold flange. Comes with thread sealant... MSRP: Now: $15.99 Add to Cart Compare Quick view GM Genuine GM 12559505 Oil Fill Tube for LS1 LS2 LS6 Camaro Corvette Firebird G8 GTO 1997-2008 Genuine GM 12559505 Oil Fill Tube for LS1 LS6 LS2 Engines -Short style oil fill tube used on 2008-earlier LS car engines -Does not fit truck/suv engines -Cap not included Fits the following applications (Gasoline V8 models only): CADILLAC CTS... MSRP: Now: $16.99 Out of stock Compare Quick view GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover Genuine GM 12570427 Driver's Side Valve Cover Fits 1999-2008 GM LS-Based V8 Engines 4.8L 5.3L 5.7L 6.0L -Updated design helps eliminate oil consumption issues on many 2008-earlier LS car and truck engines. -New GM OEM Valve Cover -Includes Gasket and... 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MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... 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Quick view Details Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare
Quick view Details Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare
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MSRP: Now: $82.99 Add to Cart Compare Quick view GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 Genuine GM 12637684 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Passenger side valvecover (has hole for oil fill tube/cap) Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake... MSRP: Now: $99.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! MADE IN USA MSRP: Now: $29.99 Choose Options Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GM Genuine GM 12559505 Oil Fill Tube for LS1 LS2 LS6 Camaro Corvette Firebird G8 GTO 1997-2008 Genuine GM 12559505 Oil Fill Tube for LS1 LS6 LS2 Engines -Short style oil fill tube used on 2008-earlier LS car engines -Does not fit truck/suv engines -Cap not included Fits the following applications (Gasoline V8 models only): CADILLAC CTS... MSRP: Now: $16.99 Out of stock Compare Quick view GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover Genuine GM 12570427 Driver's Side Valve Cover Fits 1999-2008 GM LS-Based V8 Engines 4.8L 5.3L 5.7L 6.0L -Updated design helps eliminate oil consumption issues on many 2008-earlier LS car and truck engines. -New GM OEM Valve Cover -Includes Gasket and... MSRP: Now: $149.95 Add to Cart Compare Quick view GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 Genuine GM 12642655 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Driver's side valvecover Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake rocker arms Fits applications... MSRP: Now: $82.99 Add to Cart Compare Quick view GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 Genuine GM 12637684 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Passenger side valvecover (has hole for oil fill tube/cap) Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake... MSRP: Now: $99.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! MADE IN USA MSRP: Now: $29.99 Choose Options Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GM Genuine GM 12570427 Driver's Side Valve Cover for 1999-2008 LS Engines Updated Design 4.8 5.3 5.7 6.0 LS1 Valvecover Genuine GM 12570427 Driver's Side Valve Cover Fits 1999-2008 GM LS-Based V8 Engines 4.8L 5.3L 5.7L 6.0L -Updated design helps eliminate oil consumption issues on many 2008-earlier LS car and truck engines. -New GM OEM Valve Cover -Includes Gasket and... MSRP: Now: $149.95 Add to Cart Compare Quick view GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 Genuine GM 12642655 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Driver's side valvecover Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake rocker arms Fits applications... MSRP: Now: $82.99 Add to Cart Compare Quick view GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 Genuine GM 12637684 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Passenger side valvecover (has hole for oil fill tube/cap) Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake... MSRP: Now: $99.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! MADE IN USA MSRP: Now: $29.99 Choose Options Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GM GM 12642655 LS3 Valve Cover for 2009-up LS Engines Driver's Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 Genuine GM 12642655 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Driver's side valvecover Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake rocker arms Fits applications... MSRP: Now: $82.99 Add to Cart Compare Quick view GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 Genuine GM 12637684 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Passenger side valvecover (has hole for oil fill tube/cap) Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake... MSRP: Now: $99.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! MADE IN USA MSRP: Now: $29.99 Choose Options Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GM GM 12637684 LS3 Valve Cover for 2009-up LS Engines Passenger Side 4.8 5.3 6.0 6.2 L99 L76 L96 LY2 L20 LMG LC9 LH6 Genuine GM 12637684 LS3 Valve Cover Fits all 2009-2013 LS-based V8 engines 4.8 5.3 6.0 6.2 Passenger side valvecover (has hole for oil fill tube/cap) Includes bolts and gasket Improved baffling over earlier design Clears offset LS3 style intake... MSRP: Now: $99.99 Add to Cart Compare Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! MADE IN USA MSRP: Now: $29.99 Choose Options Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view ICT Billet LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3 4.8 5.3 5.7 6.0 6.2 7.0 Boosted Nitrous LS Freeze Plug Retainer Plates ICT 551122-LS01 -Keep your cylinder head freeze plugs from blowing out when running high amounts of boost or nitrous, which can potentially cause high internal cooling system pressures.-Compatible with all... MSRP: Now: $72.99 Add to Cart Compare Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! MADE IN USA MSRP: Now: $29.99 Choose Options Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view Bluegrass Performance LS Oil Fill Cap CNC Machined Billet Aluminum Choose Silver Black or Red 4.8 5.3 5.7 6.0 6.2 7.0 LS1 LS2 LS3 LS Swap Michigan Motorsports Billet LS Oil Fill Cap CNC Machined Aluminum Choose from Natural, Black or Red Finish CNC Machined 6061 Aluminum Comes with new O-ring! MADE IN USA MSRP: Now: $29.99 Choose Options Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected × OK
Quick view GM GM Intake and Exhaust Valve Set for 2014+ L83 L84 L82 L8B 5.3L Gen V Engines 12678745 12619825 Genuine GM 12678745 12619825 Valve Set Fits 2014-Newer L83 L84 L82 L8B 5.3L Truck/SUV Engines Includes 8 Intake Valves and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valves for Gen V LT-based 5.3L engines. 1.929" Head... MSRP: Now: $162.99 Add to Cart Compare Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected
Quick view GM GM Intake and Exhaust Valve Set for 2014+ L86 L87 LT1 6.2L Gen V Engines 12629513 12678746 Genuine GM 12629513 and 12678746 Valve Set Fits 2014-Newer L86 L87 LT1 6.2L Engines Includes 8 Intake and 8 Exhaust Valves Genuine GM stock replacement Intake and Exhaust Valve set for Gen V LT-based 6.2L engines. 2.126" Head Diameter, Hollow... MSRP: Now: $459.99 Add to Cart Compare Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare Previous 1 2 3 4 5 6 Next Previous 1 2 3 4 5 6 Next Compare Selected
Quick view Frankenstein Engine Dynamics Frankenstein Boost Monster M311 273cc 11 Degree LS3 Cylinder Heads with Inconel Exhaust Valves and Upgraded Guides (SET) Frankenstein M311 BOOST Monster 11 Degree LS3 Cylinder Head Pair Fits 4.000" and Larger Bore LS Engines when used with a Rectangle Port (LS3) Style Intake Manifold Currently accepting pre-orders. Expected to ship late March 2025 Frankenstein Engine... MSRP: Was: Now: $3,599.96 - $3,729.96 Choose Options Compare
Quick view Michigan Motorsports Stock Replacement 1.550" LS Exhaust Valves for Cathedral Port 243 799 706 862 317 241 853 806 Heads LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 Michigan Motorsports 1.550" Stock Replacement LS Exhaust Valves Fits 1997-2013 Cathedral Port LS Heads Fits Casting Numbers 243 799 706 862 317 241 853 806 Choose Single or Set of 8 Exhaust Valves Michigan Motorsports' standard replacement valves are... MSRP: Was: Now: $10.99 - $79.99 Out of stock Compare
Quick view Michigan Motorsports 1.890" Stainless High Performance Intake Valves for LM7 L59 LR4 LM4 Cathedral Port 706 862 Heads Michigan Motorsports 1.890" Stainless High Performance LS Intake Valves Fits 1999-2006 Cathedral Port Head Casting Numbers 706 862 Fits Engine Codes: LM7 L59 LR4 LM4 Choose Single or Set of 8 Intake Valves Michigan Motorsports' stainless valves... MSRP: Was: Now: $15.99 - $119.99 Choose Options Compare
