Cometic Chevrolet Mark-IV Big Block V8 .060in MLS Cylinder 4.320in Bore Head Gasket

This Cometic Multi-Layer Steel (MLS) head gasket is built with embossed outer layers coated in Viton, a heat-resistant rubber material that can handle temperatures up to 482°F. It's designed with a compressed operating thickness of .060 inches and a bore size of 4.320 inches, specifically for Chevrolet Mark IV Big Block V8 engines. This gasket is a solid option for a wide range of vehicles, including models like the Chevrolet Impala, Camaro, and C10 Pickup from the mid-60s through the mid-70s.

The multi-layer stainless steel construction gives these gaskets increased strength and the ability to rebound, helping them resist corrosion and withstand the shearing forces that can occur between aluminum heads and cast iron blocks. Because they are made from multiple layers of stainless steel, they offer improved sealing performance for high-output engines and don't require any additional sealants, making installation more straightforward. This design works well for both aluminum-to-aluminum and aluminum-to-cast iron head and block combinations.