Cometic GM LS1 SB 4.060 inch Bore .040 inch MLS Head Gasket

If you're rebuilding the top end of your GM LS Gen-3/4 small block V8, getting the head gaskets right is crucial for a solid seal. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of high-output engines, whether you're working with aluminum heads on an aluminum block or aluminum heads on a cast iron block. They're designed to resist the shearing forces that can occur between different metals.

Cometic builds these gaskets with multiple layers of stainless steel for increased strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes. The compressed operating thickness is precisely 0.040 inches, and the bore size is 4.060 inches, making it a good fit for many popular LS engine builds. Because they're MLS, they don't require any additional sealants, simplifying installation.

This gasket fits a wide range of GM vehicles, including popular models like the Chevrolet Silverado, Corvette, and Cadillac CTS. It's a well-built component designed for reliable sealing in performance applications.