Cometic Chevrolet Mark-IV Big Block V8 .075in MLS Cylinder Head Gasket - 4.375in Bore

If you're working on a Chevrolet Mark-IV Big Block V8 and need a reliable head gasket, this Multi-Layer Steel (MLS) gasket from Cometic is a solid option. It's designed with a 4.375-inch bore and a compressed thickness of 0.075 inches, making it suitable for a wide range of high-output engine builds. This gasket fits many Chevrolet vehicles from the mid-60s through the early 80s, including popular models like the Impala, Chevelle, and C10 Pickup.

Cometic builds these gaskets using multiple layers of stainless steel, which gives them increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing conditions and different surface finishes, whether you're pairing aluminum heads with an aluminum block or cast iron block. Because they're MLS, they don't require any additional sealants, simplifying installation and ensuring a maximum seal right out of the box.