Cometic Chevrolet Gen-3 Inline 6 .060in MLS Cylinder Head Gasket - 4.125in Bore

If you're rebuilding the top end of your Chevrolet Gen-3 Inline 6 engine, getting the cylinder head gasket right is crucial for a good seal. This Cometic Multi-Layer Steel (MLS) gasket is specifically made for a 4.125-inch bore and is .060 inches undersize, designed to fit a wide range of classic Chevrolet, Buick, and Checker vehicles from the 1960s and 70s, including models like the Chevrolet C10 Pickup and Checker Marathon.

Cometic builds these gaskets with multiple layers of stainless steel for strength and rebound, which helps them handle the forces generated when mating different block and head materials, like aluminum to cast iron. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle tough sealing conditions and provides a reliable seal without needing extra sealants. The center layer is stainless steel and can be varied in thickness to achieve different compressed heights, with this particular gasket having a compressed operating thickness of 0.036 inches.