Cometic Chevrolet Mark-IV Big Block V8 .140in MLS Cylinder Head Gasket - 4.320in Bore

If you're working on a Chevrolet Mark-IV Big Block V8 and need a new head gasket, this Cometic Multi-Layer Steel (MLS) gasket is a solid option. It's built to handle the demands of high-output engines and fits a wide range of Chevrolet vehicles from the 1960s through the 1990s, including popular models like the C10 Pickup, Impala, and Corvette.

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 temperatures up to 482 degrees Fahrenheit. This advanced construction means the gasket seals effectively without needing any additional sealants, making installation more straightforward. It's designed to work well with both aluminum and cast iron blocks, and it can handle the shearing forces that can occur between different metal types.

With a compressed operating thickness of .140 inches and a bore size of 4.320 inches, this gasket is specifically made for the Mark-IV Big Block V8. It's a well-built component that helps ensure a reliable seal for your engine rebuild.