Cometic GM LB7/LLY/LBZ/LMM/LGH/LML Duramax .066in MLS Cylinder Head Gasket - 4.100in Bore - RHS

When you're rebuilding the top end of your GM Duramax LB7, LLY, LBZ, LMM, LGH, or LML engine, getting the head gaskets right is crucial for a solid seal. This Cometic Multi-Layer Steel (MLS) gasket is built for the demands of these powerful diesel engines, ensuring reliable performance after your rebuild.

This gasket features multiple layers of stainless steel, which gives it increased strength and the ability to rebound, helping it resist corrosion and maintain a seal even under high stress. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F and works well with both aluminum and cast iron engine blocks. The compressed thickness is .066 inches, and the bore size is 4.100 inches. This is the right-side gasket, designed to fit a range of GM trucks and SUVs like the Chevrolet Silverado 2500 HD, GMC Sierra 3500 HD, and Chevrolet Express 2500.