Cometic Chevrolet Mark-IV Big Block V8 .056in MLS Cylinder Head Gasket - 4.540in Bore

When you're rebuilding the top end of your Chevrolet Mark-IV Big Block V8, you need a head gasket that can handle the pressure. This Cometic Multi-Layer Steel (MLS) head gasket is designed for that purpose. It features multiple embossed layers of stainless steel, with the outer layers coated in Viton rubber. This construction means it's built to seal effectively without needing any additional sealants, making installation more straightforward.

The MLS design offers increased strength and the ability to rebound, which helps resist corrosion and withstand the forces between aluminum and cast iron blocks. The Viton coating on the outer layers is heat resistant up to 482°F (250°C), making it suitable for demanding sealing environments. The center layer is uncoated stainless steel and can be varied to achieve different compressed thicknesses, with this specific gasket set to 0.056 inches when compressed.

This gasket fits a wide range of GM vehicles, including models like the Chevrolet Impala, Chevelle, and C10 Pickup from various years. It's a solid option for high-output engines where a reliable seal is critical.