Cometic Chevy BB Gen IV 396/402/427/454 H/G 4.320 inch Bore .027 inch MLS Head Gasket

If you're working on a Chevrolet Big Block Gen IV engine, like those found in a '65 Impala or a '70 Chevelle, this Cometic Multi-Layer Steel (MLS) head gasket is built to seal things up right. It's designed for engines with a 4.320-inch bore and has a compressed thickness of 0.027 inches, making it a solid choice for rebuilding or upgrading your top end.

What makes these MLS gaskets stand out is their construction. They're made from multiple layers of stainless steel, which gives them strength and helps them resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing jobs and works well with different surface finishes, whether you're mating aluminum heads to an aluminum block or to cast iron. This multi-layer design means they can handle the shearing forces between different metals and don't require any extra sealants to do their job effectively.

This gasket is a popular option for high-output engines because of its robust construction and reliable sealing capabilities. It's a well-built part that's ready to go to work on a wide range of classic Chevy applications.