Cometic 01-06 GM 6.6L Duramax Diesel 4.100 inch Bore .075 inch MLS-5 RHS Head Gasket

If you're rebuilding the top end of your GM 6.6L Duramax diesel, a solid head gasket is crucial for sealing combustion pressure and coolant. This Multi-Layer Steel (MLS) gasket from Cometic is built for the demands of these powerful engines, offering a reliable seal for both aluminum and cast iron blocks. It's designed to handle the high output these engines are known for, ensuring your rebuild stays sealed tight.

Cometic uses multiple layers of stainless steel for increased strength and corrosion resistance. The outer layers are embossed and coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and varying surface finishes. This construction means you don't need additional sealants, and the gasket can handle the shearing forces between different block and head materials. The center layer is stainless steel, and its thickness is varied to achieve the specific 0.075-inch compressed operating thickness needed for this application, with a 4.100-inch bore diameter.

This gasket is specifically for the right-hand side of the engine. It fits a wide range of GM trucks and SUVs, including models like the Chevrolet Silverado 2500 HD and GMC Sierra 3500 HD from 2001 through 2016, as well as Chevrolet Express and GMC Savana vans from 2006-2016.