ARP 134-3609 Pro Series High Performance Cylinder Head Bolt Kits 1997-2004 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LS3
Be sure to note which head bolts you need as GM used two different style LS head bolts
1997-2004 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
ARP Pro Series bolts are cold-forged to ensure molecular integrity, heat treated prior to thread rolling and machining, are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex and a wide area flange or 12-point head that help eliminate the need for valvetrain removal when re-torquing cylinder heads.