Cometic Pontiac 400/428/455 V8 .056in MLS Cylinder Head Gasket - 4.200in 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 built for Pontiac V8 engines like the 400, 428, and 455, with a 4.200-inch bore and a compressed thickness of 0.056 inches. This gasket is designed to handle the demands of higher output engines, ensuring a solid seal between your cylinder heads and block.

What makes these MLS gaskets stand out is their construction. They use 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 tough sealing environments and various surface finishes, meaning you don't need to add any extra sealants. This design is effective whether you're pairing aluminum heads with an aluminum block or aluminum heads with a cast iron block, as it can manage the shearing forces between different metals.

This gasket fits a range of classic Pontiac models, including the Firebird, Grand Prix, and LeMans, from the late 60s through the late 70s. It’s a solid option for rebuilding or refreshing your Pontiac V8's top end.