Michigan Motorsports LS Head Bolt Kit Fits 1997-2003 LS1 LS6 LQ4 LQ9 LM7 LR4 4.8L 5.3L 5.7L 6.0L Replaces GM 12498545 Premium Cylinder Head Bolt Set-Fast Shipping

Description

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

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.

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 2 Sets Needed per Engine These cannot be reused after being torqued down because they stretch when torqued.

Choose the option for enough fasteners for one or both cylinder heads. 2 Sets Needed per Engine