Cometic Chevy Mark-IV Big Block V8 .040in MLS Cyl Head Gasket-4.500in Bore-Brodix Water Passages

This is a Cometic Multi-Layer Steel (MLS) head gasket designed for Chevrolet Mark-IV Big Block V8 engines. It's built with a 4.500 inch bore and a thickness of 0.040 inches, featuring Brodix water passages. MLS gaskets are a solid choice for high-output engines because they offer maximum sealing performance without needing additional sealants, making them suitable for both aluminum and cast iron block combinations.

The construction involves multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are embossed and coated on both sides with Viton, a heat-resistant rubber material that can handle demanding sealing environments and various surface finishes. The center layer is uncoated stainless steel, allowing for different thickness options to meet specific engine build needs. This particular gasket has a compressed operating thickness of 0.036 inches.

This gasket fits a wide range of Chevrolet vehicles from the mid-60s through the early 80s, including popular models like the Impala, C10 Pickup, and Camaro. It's a well-built component for rebuilding or upgrading your Mark-IV Big Block V8.