Cometic GM LS1 (w/M.I.D. Sleeves) 3.910 inch Bore .040 inch MLS Head Gasket

When you're rebuilding the top end of your GM LS engine, especially one with Darton MID sleeves, getting the cylinder head sealing right is critical. This Cometic Multi-Layer Steel (MLS) head gasket is built to handle the pressures of high-output applications. It's designed to provide a solid seal between your aluminum heads and either aluminum or cast iron blocks, resisting the shearing forces that can occur between different metals.

Cometic uses multiple layers of stainless steel for strength and corrosion resistance, with embossed outer layers coated in Viton, a heat-resistant rubber material rated up to 482°F. This coating helps ensure a reliable seal across various conditions and surface finishes. The gasket has a compressed operating thickness of .040 inches and includes MID Sleeves, making it a direct fit for specific LS engine builds that utilize them. Because they're MLS, these gaskets don't require any additional sealants, simplifying installation.

This gasket fits a wide range of GM LS engines, including those found in vehicles like the Chevrolet Camaro, Corvette, and Pontiac GTO. Always refer to the manufacturer's installation instructions for proper torque sequences and procedures.