Cometic Chevrolet Big Block 396/402/427/454 4.375in Bore .030in Thick MLS-5 Head Gasket

Cometic Gasket has a reputation for making solid sealing components, and this Multi-Layer Steel (MLS) head gasket is a prime example. It's built for Chevrolet Big Block V8 engines, specifically designed for the 396, 402, 427, and 454 cubic inch displacements. This gasket features a 4.375-inch bore and a compressed thickness of .030 inches, making it suitable for a wide range of these powerful engines, including models like the Chevrolet Impala, Chevelle, and Corvette from the mid-60s through the mid-70s.

What sets this gasket apart is its construction. It's made from multiple layers of stainless steel for increased strength and resistance to shearing forces, especially when pairing aluminum heads with cast iron blocks. The outer layers are embossed and coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C) and works well in demanding sealing environments. This advanced design means you don't need to use any additional sealants, and it offers excellent sealing performance for high-output engines.