Cometic Chevrolet Mark-IV Big Block V8 .075in 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 Multi-Layer Steel (MLS) gasket from Cometic is built for those high-output engines. It's designed to provide a solid seal without needing any extra sealants, making installation more straightforward.

This gasket is constructed 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 temperatures up to 482°F (250°C) and works well with both aluminum and cast iron blocks. The center layer is uncoated stainless steel, and its thickness is varied to achieve the specific 0.075-inch compressed operating thickness, with a 4.540-inch bore diameter. This construction helps it withstand the forces created when mating different block and head materials.

This gasket fits a wide range of Chevrolet vehicles from the mid-60s through the early 90s, including popular models like the Impala, C10 Pickup, and Camaro. It's a well-built option for anyone looking to ensure a reliable seal on their Mark-IV Big Block engine.