Cometic Chevrolet Mark-IV Big Block V8 .086in MLS Cylinder Head Gasket - 4.320in Bore

If you're working on a Chevrolet Mark-IV Big Block V8 engine, this Cometic Multi-Layer Steel (MLS) head gasket is a solid choice for sealing your cylinder heads. It's designed with a compressed thickness of .086 inches and a bore size of 4.320 inches, making it suitable for a wide range of Chevrolet applications, including models like the 1965-1975 Bel Air, 1965-1972 Biscayne, and 1973-1974 Blazer.

This gasket is constructed from multiple layers of stainless steel, which gives it increased strength and the ability to rebound, helping it resist 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 you don't need to use any additional sealants, and it works well for sealing aluminum heads to either aluminum or cast iron blocks, even with the shearing forces that can occur between different metals.