Cometic GM Gen-V/VI Big Block V8 4.630in Bore .066in MLS Cylinder Head Gasket

Cometic Gasket is known for making well-built sealing components, and this Multi-Layer Steel (MLS) head gasket is a prime example. It’s designed for GM Gen-V/VI Big Block V8 engines with a 4.630-inch bore, offering a compressed thickness of 0.066 inches. This gasket is built to handle the demands of high-output engines, providing a reliable seal without needing additional sealants.

This gasket 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 in tough sealing environments. The center layer is uncoated stainless steel and can be varied in thickness to meet specific engine needs. This construction makes it suitable for mating aluminum heads to either aluminum or cast iron blocks, as it can withstand the shearing forces that can occur between different metals.

This gasket fits a range of GM trucks and vans, including models like the Chevrolet C1500, Chevrolet C2500 Suburban, and GMC C3500. It's a solid option for rebuilding or repairing your engine's top end.