Cometic GM Gen-V/VI Big Block V8 .045in MLS Cylinder 4.540in Bore Head Gasket

Cometic Gasket is well-known for making robust sealing solutions, and this Multi-Layer Steel (MLS) head gasket is a prime example. It’s designed for GM Gen-V/VI Big Block V8 engines, specifically for applications where a 4.540-inch bore is present and a compressed thickness of 0.045 inches is needed. This gasket is built to handle the demands of high-output engines, ensuring a solid seal between your cylinder head and engine block.

What makes this gasket stand out is its construction. It’s made from multiple layers of stainless steel, which gives it increased strength and the ability to rebound, helping it resist corrosion. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. This Viton coating is tough enough for harsh sealing environments and varying surface finishes, making it suitable for both aluminum-to-aluminum and aluminum-to-cast iron block combinations. The center layer is uncoated stainless steel, allowing for precise thickness control, like the 0.045 inches featured here.

This gasket fits a wide range of GM trucks and vans from the early to mid-1990s, including models like the Chevrolet C1500, Chevrolet C2500 Suburban, and GMC C3500. Because it’s an MLS gasket, it doesn't require any additional sealants, simplifying installation. Just ensure your mating surfaces are clean and flat, and this gasket will do the rest.