Cometic GM LS1 SB 3.910 inch Bore .098 inch MLS-5 Head Gasket

This is a Cometic Multi-Layer Steel (MLS) head gasket, part number C5475-098, designed for GM LS Gen 3 and 4 small block V8 engines. It features a 3.910 inch bore and a compressed thickness of .098 inches. MLS head gaskets are built with multiple layers of stainless steel, offering increased strength and resistance to corrosion, making them a solid choice for high-output engines. They are engineered to seal effectively without needing additional sealants, and they work well with both aluminum and cast iron blocks, handling the stresses that can arise from dissimilar metals.

The outer layers of this gasket are embossed and coated with Viton, a heat-resistant rubber material capable of withstanding temperatures up to 482 degrees Fahrenheit. This coating is designed to perform in demanding sealing environments and on various surface finishes. The center layer is uncoated stainless steel, and its thickness can be varied to meet different sealing requirements. This construction makes the gasket resilient and able to rebound, ensuring a consistent seal over time.

This gasket fits a wide range of GM vehicles, including models like the Chevrolet Corvette, Cadillac CTS, and GMC Sierra 1500. Always confirm fitment for your specific year and model.