Cometic GM LS Series V8 4.040in bore .040in MLX Head Gasket

Cometic Gasket is well-known for making solid sealing solutions, and this MLX head gasket is a prime example for GM LS series V8 engines. If you're rebuilding or refreshing the top end of your LS engine, a good head gasket is crucial for keeping combustion pressures contained and coolant and oil where they belong. This gasket is specifically designed for a 4.040-inch bore and has a compressed thickness of .040 inches, making it a precise fit for many popular LS applications.

What makes this gasket stand out is its Multi-Layer Steel (MLS) construction. It's built with multiple layers of stainless steel, which gives it increased strength and resistance to corrosion. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle tough sealing environments and varying surface finishes, ensuring a reliable seal even under high output conditions. The center layer is also stainless steel and can be varied to achieve different thicknesses, like the .040-inch spec on this particular gasket. This design means it works well with both aluminum and cast iron blocks and heads, and it doesn't require any additional sealants.

This gasket fits a wide range of GM vehicles, including models like the Chevrolet Silverado, Cadillac Escalade, and Buick LaCrosse. It's a well-built component designed to handle the demands of high-output LS engines.