Cometic GM LS1 SB 4.130 inch Bore .075 inch MLS-5 Head Gasket

This is a Cometic Multi-Layer Steel (MLS) head gasket designed for GM LS Gen-3 and Gen-4 small block V8 engines. It features a 4.130-inch bore and a compressed thickness of 0.075 inches, making it suitable for a wide range of popular GM vehicles like the Chevrolet Silverado, Corvette, and Cadillac CTS. These gaskets are essential for maintaining proper compression and preventing leaks between the cylinder head and the engine block, especially in high-output applications.

Cometic builds these gaskets with multiple layers of stainless steel for increased strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes without needing additional sealants. The center layer is also stainless steel and can be varied in thickness to meet different engine build requirements. This construction helps them withstand the forces created when mating aluminum heads to either aluminum or cast iron blocks.