Cometic's cylinder head gasket for GM LSX Gen-4 small block V8 is a .063" DST cylinder head gasket specified for a 4.165" bore. The gasket supports both 1/2" and 3/8" stud configurations and is presented for the right-hand side application as listed. It provides a direct replacement option where those exact bore and stud specifications are required.
Cometic Gasket GM LSX Gen-4 SB V8 .063in DST Cyl. HG - 4.165in Bore - 1/2in & 3/8in Studs - RHS