Cometic Chevrolet Mark-IV Big Block V8 .066in MLS Cylinder Head Gasket - 4.540in Bore

When you're rebuilding the top end of your Chevrolet Mark-IV Big Block V8, a reliable head gasket is crucial for sealing the combustion chamber and coolant passages. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of high-output engines, ensuring a strong seal between your cylinder head and block.

Cometic constructs these gaskets with 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, meaning you won't need additional sealants. The compressed thickness of this gasket is .066 inches, and it's designed for a 4.540-inch bore, making it suitable for a range of Chevrolet V8 applications from the mid-60s through the early 80s, including models like the Impala, Chevelle, and C10 pickups.