Cometic GM LS1 SB 4.060 inch Bore .066 inch MLS-5 Head Gasket

This is a Cometic MLS-5 head gasket, built for GM LS Gen-3 and Gen-4 small block V8 engines. It has a 4.060 inch bore and a compressed thickness of .066 inches. This gasket is designed to provide maximum sealing performance for high-output engines, and it fits a wide variety of GM vehicles, including models like the Chevrolet Corvette, Cadillac CTS, and Buick LaCrosse.

Cometic's Multi-Layer Steel (MLS) gaskets are well-built using multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes. This construction means the gasket requires no additional sealants and is suitable for use with both aluminum and cast iron blocks, effectively handling the shearing forces that can occur between different metals.