Cometic Chevrolet Mark-IV - GM Gen-V/VI Big Block V8 .051in MLS Cylinder Head Gasket - 4.310in Bore

Starting with a compressed thickness of 0.051 inches, this Cometic Multi-Layer Steel (MLS) head gasket is built for serious performance. It's designed for Chevrolet Mark-IV and GM Gen-V/VI Big Block V8 engines, featuring a 4.310-inch bore. This gasket is a solid choice for high-output applications, whether you're working with aluminum heads on aluminum blocks or aluminum heads on cast iron blocks. The multi-layer stainless steel construction offers increased strength and resistance to corrosion, while the outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F.

The embossed outer layers with Viton coating are designed to seal effectively in demanding conditions and on various surface finishes. The center shim layer is stainless steel and can be varied to achieve different thicknesses, which is how Cometic achieves the 0.051-inch compressed operating thickness. This gasket is particularly well-suited for aftermarket heads, as it includes undersized water ports that allow for customization to your specific setup. Because it's an MLS gasket, it doesn't require any additional sealants, simplifying installation.

This gasket fits a wide range of vehicles, including popular models like the 1965-1975 Chevrolet Bel Air, 1968-1974 Chevrolet C10 Pickup, and 1965-1974 Chevrolet Corvette. It's a well-built component for rebuilding or upgrading your engine's top end.