Cometic GM LB7/LLY/LBZ/LMM/LGH/LML Duramax .070in MLS Cylinder Head Gasket - 4.100in Bore - RHS

This Cometic Multi-Layer Steel (MLS) head gasket is what you get when you need a solid seal for your GM Duramax engine. It's built with multiple layers of stainless steel, giving it the strength to handle high output and resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that works well in tough sealing situations, making it suitable for both aluminum and cast iron blocks. This gasket is designed to provide maximum sealing performance without needing any extra sealants.

The multi-layer design is key here. Each layer of stainless steel adds strength and helps the gasket rebound, which is important for maintaining a good seal over time. The Viton coating on the outer layers is rated for temperatures up to 482°F (250°C), so it can handle the heat generated by powerful engines. The center layer is stainless steel and can be varied in thickness to meet different requirements; in this case, it's set to provide a compressed operating thickness of 0.098 inches with a 0.070-inch uncompressed thickness and a 4.100-inch bore, making it a good fit for many GM Duramax applications like the LB7, LLY, LBZ, LMM, LGH, and LML engines.

This gasket fits a wide range of GM trucks and vans, including models like the Chevrolet Silverado 2500 HD and GMC Savana 2500. It's a well-built component designed for reliable performance in demanding conditions.