Cometic GM LS Gen-3/4 Small Block V8 .049in MLS Cylinder Head Gasket - 4.000in Bore

Starting with a compressed operating thickness of 0.036 inches, this Cometic Multi-Layer Steel (MLS) head gasket is built for the demands of high-output GM LS Gen-3 and Gen-4 small block V8 engines. It features multiple embossed layers of stainless steel, with the outer layers coated in Viton, a heat-resistant rubber material rated up to 482°F (250°C). This construction is designed to handle the shearing forces between aluminum heads and cast iron blocks, offering increased strength and resistance to corrosion. The center shim layer is uncoated stainless steel, allowing for variations in thickness requirements, like the .049 inch specification on this particular gasket, which also has a 4.000 inch bore diameter.

Cometic MLS head gaskets are engineered to provide maximum sealing performance without the need for sealants, making them suitable for a wide range of vehicles including models like the Chevrolet Silverado, Cadillac Escalade, and Chevrolet Camaro. The Viton coating on the outer layers is chosen for its ability to meet the challenges of harsh sealing environments, varying load conditions, and different surface finishes. This well-built gasket is a solid option for rebuilding or upgrading the top end of your LS engine.