Product Description
Genuine GM 12638038 "NNBS" Cathedral Port Truck Intake Manifold
This "NNBS" intake manifold is a popular option to replace the discontinued GM TBSS intake manifold. Originally used on 2010-2014 GM V8 Truck/SUV/Van applications, this intake performs identical to the popular TBSS intakes, making it a great upgrade for 1999-2006 LS Truck/SUV engines.
- Bare intake manifold by itself
- 4-Bolt 87-90mm Throttle Body Flange
- Highest Performing factory Cathedral Port Intake Manifold
- Excellent upgrade for 1999-2006 4.8L, 5.3L, and 6.0L LS Truck Engines.
- Configured for the 2009-2014 style truck MAP sensors (GM # 12711681 for naturally aspirated applications)
- Uses PCV fitting/hose # 12597774 to go from top of intake manifold to driver's side valve cover
- See part # 12660709 for matching fuel rails
Original Factory Applications Include (4.8L and 5.3L models only):
- CHEVROLET AVALANCHE 2010-2013
- CHEVROLET COLORADO 2010-2012
- CHEVROLET EXPRESS 1500 2010-2014
- CHEVROLET EXPRESS 2500 2010-2017
- CHEVROLET EXPRESS 3500 2010-2017
- CHEVROLET SILVERADO 1500 2010-2013
- CHEVROLET SUBURBAN 1500 2010-2014
- CHEVROLET TAHOE 2010-2014
- GMC CANYON 2010-2012
- GMC SAVANA 1500 2010-2014
- GMC SAVANA 2500 2010-2017
- GMC SAVANA 3500 2010-2017
- GMC SIERRA 1500 2010-2013
- GMC YUKON 2010-2014
- GMC YUKON XL 1500 2010-2014
