Cometic GM LB7/LLY/LBZ/LMM/LGH/LML Duramax .055in MLS Cylinder Head Gasket - 4.100in Bore - LHS

This Cometic Multi-Layer Steel (MLS) head gasket is built with multiple embossed layers of stainless steel, featuring an outer layer coated with Viton rubber. This construction is designed to handle the high output engines found in GM Duramax trucks. The Viton coating is heat resistant up to 482 degrees Fahrenheit, making it suitable for demanding sealing environments and various surface finishes. The center shim layer is stainless steel and can be varied to achieve different gasket thicknesses, like the .055 inch compressed operating thickness of this particular gasket.

MLS gaskets are a strong choice for both aluminum-to-aluminum and aluminum-to-cast iron block configurations, as they can effectively manage the shearing forces that occur between dissimilar metals. The multiple stainless steel layers not only add strength but also provide rebound resistance and help prevent corrosion. Because they are well-made and designed for precise sealing, these gaskets typically do not require additional sealants, simplifying the installation process when you're rebuilding the top end of your engine.

This gasket fits a wide range of GM trucks, including models like the Chevrolet Silverado 2500 HD and GMC Sierra 3500 HD from 2001 through 2016. It's a solid option when you need reliable sealing for your Duramax engine.