Cometic GM LSX Gen-4 small block V8 cylinder head gasket specified at .071" DST thickness with a 4.200" bore for the left-hand side. It provides the listed bore size and provisions for 1/2" and 3/8" studs, intended for Gen-4 LSX small block cylinder head installations requiring the .071" DST and 4.200" bore specification.
Cometic Gasket GM LSX Gen-4 SB V8 .071in DST Cyl. HG - 4.200in Bore - 1/2in & 3/8in Studs - LHS