Cometic GM / Mercury 8.1L 496ci 4.350in Bore .060in MLS-5 RH Head Gasket

If you're rebuilding the top end of your GM or Mercury 8.1L 496ci big block V8, a quality head gasket is crucial for a solid seal. This Cometic MLS-5 head gasket is specifically designed for the right side of these engines, featuring a 4.350-inch bore and a compressed thickness of 0.060 inches. It's built to handle the demands of high-output engines, ensuring reliable performance and preventing leaks between the cylinder head and the block.

Cometic's Multi-Layer Steel (MLS) construction uses multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C) and works well with different block and head materials, including aluminum to aluminum or aluminum to cast iron. This design means you don't need additional sealants, and the gasket can rebound to maintain a strong seal even under significant stress.

This gasket fits a range of popular trucks and SUVs, including models like the Chevrolet Suburban 2500 and GMC Sierra 2500 HD. It's a well-built component designed for a direct fit, making your engine rebuild process smoother.