Cometic Chevy Big Block Brodix Big Duke/Big Brodie Heads 4.63in Bore .080in MLS Head Gasket

When you're rebuilding a high-output Chevy Big Block engine, especially one fitted with aftermarket Brodix Big Duke or Brodie heads, getting the sealing right is critical. This Multi-Layer Steel (MLS) head gasket from Cometic is built to handle the demands of serious performance builds.

This gasket features multiple layers of stainless steel for strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and surface finishes, ensuring a solid seal without needing additional sealants. The compressed thickness is set at 0.080 inches, and the bore size is 4.630 inches, designed to work with those specific aftermarket heads. It also includes undersized water ports, giving you flexibility for custom port matching during installation.

This gasket is well-suited for a wide range of Chevrolet and GM Big Block V8 applications, including Mark IV and Gen V/VI engines. It's a solid option for pairing aluminum heads with either aluminum or cast iron blocks, as the MLS construction can manage the shearing forces between dissimilar metals.