Cometic 01-06 GM 6.6L Duramax Diesel 4.100 inch Bore .060 inch MLS-5 RHS Head Gasket

If you're rebuilding the top end of your GM 6.6L Duramax diesel, a reliable head gasket is crucial for sealing combustion pressure and coolant. This Multi-Layer Steel (MLS) head gasket from Cometic is specifically designed for the right side of engines with a 4.100 inch bore, featuring a compressed thickness of 0.060 inches. It's built to handle the high output these engines are known for, ensuring a strong seal between your cylinder head and block.

Cometic uses multiple layers of stainless steel for increased strength and corrosion resistance, which also allows the gasket to rebound effectively. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes, making it suitable for both aluminum-to-aluminum and aluminum-to-cast iron block configurations. The center layer is uncoated stainless steel, and its thickness can be varied to meet different requirements, like the 0.060 inch thickness on this particular gasket.

This gasket fits a wide range of GM trucks and SUVs, including models like the Chevrolet Silverado 2500 HD, GMC Sierra 3500 HD, and Chevrolet Express 2500. Because it's an MLS design, it doesn't require any additional sealants, simplifying installation when you're putting your engine back together.