Cometic Pontiac 400/428/455 V8 .056in MLS Cylinder Head Gasket - 4.380in Bore

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 Pontiac 400, 428, and 455 V8 engines, featuring a 4.380-inch bore and a compressed thickness of .056 inches. This gasket is built to handle the demands of high-output engines, ensuring a solid seal between your cylinder heads and engine block.

This MLS gasket is constructed from multiple layers of stainless steel, which gives it 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 degrees Fahrenheit. This coating helps create a reliable seal, even with different head and block materials like aluminum to aluminum or aluminum to cast iron. The center layer is stainless steel and can be varied to achieve different thicknesses, like the .056 inches on this particular gasket. Because it's an MLS design, it doesn't require any additional sealants, making installation more straightforward.

This gasket fits a range of classic Pontiac models, including the Bonneville, Catalina, Firebird, and GTO, among others from the late 60s through the late 70s. It's a solid option for anyone rebuilding or refreshing their Pontiac V8 engine.