1997-2003 LS Head Bolt Kit LS1 LS6 LQ4 LQ9 LM7 LR4 4.8 5.3 5.7 6.0 12498545

LS 1997-2003 LS Head Bolt Kit LS1 LS6 LQ4 LQ9 LM7 LR4 4.8 5.3 5.7 6.0

Includes Bolts for 2 Heads (1 complete engine)

These are the stock-replacement cylinder head bolts that are torque-to-yield and are built to the same specs as GM # 12498545.

They are the Gen-3 design that use three different bolt lengths and were used by GM from 1997 through mid-year 2004.

Be sure to note which head bolts you need as GM used two different style LS head bolts

1997-2003 heads used QTY 8 155mm Bolts, QTY 2 100mm bolts, and QTY 5 45mm bolts

2004-2014 heads used QTY 10 100mm bolts, and QTY 5 45mm bolts

These cannot be reused after being torqued down because they stretch when torqued

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