Cometic Chevrolet Mark-IV Big Block V8 .040in MLS Cylinder Head Gasket - 4.500in Bore

If you're rebuilding the top end of your Chevrolet Mark-IV Big Block V8, getting the right head gasket is crucial for a solid seal. This Cometic Multi-Layer Steel (MLS) gasket is specifically made for those powerful V8s, featuring a 4.500-inch bore and a .040-inch compressed thickness. It's designed to handle the demands of high-output engines, ensuring a reliable seal between your block and heads.

Cometic builds these gaskets with multiple layers of stainless steel for increased strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and different surface finishes, making it suitable for combinations of aluminum and cast iron blocks and heads. The center layer is stainless steel, and its thickness can be varied to achieve different compressed thicknesses, like the .036-inch operating thickness on this particular gasket. Because they're MLS, these gaskets don't require any extra sealants, simplifying installation.

This gasket fits a wide range of Chevrolet vehicles from the 1960s through the 1980s, including popular models like the Impala, C10 Pickup, and Camaro. It's a well-built option for anyone looking for a dependable seal on their Mark-IV Big Block engine.