Copper Head Gasket GM LS1/LS2/LS3/LS6 Gen-3/4 Small Block V8 .050" Copper Cylinder Head Gasket, 4.100" Bore. GM LS ENGINE 4.100in. Bore

GM LS1/LS2/LS3/LS6 Gen-3/4 Small Block V8 .056" MLS Cylinder Head Gasket, 4.190" Bore.

Cometic GM LS1 SB 3.840in Bore .040in MLS Head Gasket

Cometic GM LS1 SB 4.035in Bore .040in MLS Head Gasket