Cometic Chevy BB Head Gasket 4.375in Bore .051in MLS 396/402/427/454 Head Gasket

If you're working on a Chevrolet Big Block V8 engine, specifically those with a 4.375-inch bore like the 396, 402, 427, or 454, this Cometic Multi-Layer Steel (MLS) head gasket is a solid option. It's built to handle the demands of higher output engines, ensuring a strong seal between your cylinder head and engine block without needing extra sealants. This gasket fits a wide range of classic Chevrolet vehicles, including models like the 1965-1975 Bel Air, 1967-1972 Camaro, and 1965-1974 Corvette.

What makes this gasket stand out is its construction. It uses multiple layers of stainless steel, which gives it strength and helps it resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing conditions and different surface finishes. This design is effective whether you're mating aluminum heads to an aluminum block or aluminum heads to a cast iron block, as it can manage the stresses that come from those material combinations. The compressed thickness is a precise 0.051 inches, crucial for maintaining proper compression ratios.