Cometic Chevy BB 4.63in Bore .080 inch MLS 396/402/427/454 Head Gasket

This Cometic head gasket is built for serious performance on your Chevy Big Block engine. You get a Multi-Layer Steel (MLS) gasket with a compressed operating thickness of 0.080 inches and a 4.630-inch bore, designed to seal the combustion chamber effectively. It's constructed from multiple embossed layers of stainless steel, with the outer layers coated in Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C). This construction means the gasket requires no additional sealants and is built to withstand the demands of high-output engines, working well with both aluminum and cast iron blocks.

The multi-layer design gives these gaskets increased strength and the ability to rebound, helping them resist corrosion and maintain a solid seal even under significant stress. The center shim layer is stainless steel, and the Viton coating on the outer layers is specifically chosen to handle harsh sealing environments and varying surface finishes. This gasket is a solid option for many 1991-2000 Chevrolet and GMC Big Block V8 trucks, including models like the C1500, K2500 Suburban, and C3500, offering a durable seal for your engine build.