Michigan Motorsports LS9 Heads Gaskets and Head Bolts 2004 and up 4.8 5.3 5.7

2005+ LS9 Head Gaskets and Bolt Kit This Kit includes 2 LS9 Head Gaskets 12622033 and 2005+ head bolts. Kit Includes: LS9 Head Gaskets (best gasket to use on most LS builds) 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 2005-2014 heads used QTY 10 100mm bolts, and QTY 5 45mm bolts Prior to 2004, all of the Gen3 and Gen4 GM small block engines had head bolts of varying lengths. For 2005, GM changed the head bolt design from that style to the new style which are all the shorter length. Please be sure you know which style bolts your vehicle requires before ordering. LS9 Performance Multilayer Head Gasket for LS9 engines, can also be used with 5.3, 5.7 6.0 6.2 blocks. 4.100" bore, .055" compressed thickness, 7 layer These are know as best gaskets for engines up to 4.100" bore. Very common head gasket to use on Turbo and Supercharged engines.