Cometic GM LS1 (w/M.I.D. Sleeves) 4.125 inch Bore .051 inch MLS Head Gasket

This Cometic Multi-Layer Steel (MLS) head gasket is built with a compressed operating thickness of 0.051 inches and a 4.125-inch bore, specifically designed for GM LS engines that utilize Darton MID Sleeves. These gaskets are a solid choice for high-output applications because they are made from multiple layers of stainless steel, which gives them increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit, making it suitable for demanding sealing environments and various surface finishes.

The multi-layer construction allows these gaskets to withstand the shearing forces that can occur between aluminum heads and cast iron blocks, and they don't require any additional sealants. The center layer is uncoated stainless steel, and its thickness can be varied to meet different requirements. This well-built gasket is designed to provide maximum sealing performance for engines that push the limits.

This gasket fits a wide range of GM vehicles, including models like the Chevrolet Corvette, Camaro, and Pontiac GTO. Always refer to the manufacturer's installation instructions for proper fitment and procedures.