Cometic Pontiac 400/428/455 V8 .092in MLS Cylinder Head Gasket - 4.380in Bore

If you're rebuilding the top end of your Pontiac 400, 428, or 455 V8 engine, getting the right head gasket is crucial for a solid seal. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of these classic V8s, offering a reliable seal between your cylinder heads and engine block.

This gasket is constructed 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 with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. This coating ensures a good seal even with different head and block materials, like aluminum heads on cast iron blocks, and it means you don't need to add any sealants during installation. The center layer is stainless steel and can be varied to achieve different thicknesses; this particular gasket has a compressed thickness of 0.098 inches and a bore size of 4.380 inches, making it suitable for a range of Pontiac V8 applications from the late 1960s through the late 1970s, including models like the Firebird, Grand Prix, and LeMans.