Cometic AMC 390/401 Gen-3 V8 .098in MLS Cylinder Head Gasket - 4.250in Bore

If you're working on an AMC 390 or 401 Gen-3 V8 engine, this Multi-Layer Steel (MLS) head gasket from Cometic is built to handle the demands of high-output applications. It's designed to provide a strong seal between your cylinder head and engine block without needing any additional sealants, making installation more straightforward. This gasket is suitable for use with aluminum heads on either aluminum or cast iron blocks, and it's engineered to resist the shearing forces that can occur between dissimilar metals.

The construction uses multiple layers of stainless steel for increased strength and corrosion resistance. 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 its thickness is what sets this gasket apart at 0.098 inches when compressed, allowing it to accommodate specific engine builds. This gasket fits a wide range of American Motors and Jeep vehicles from the late 1960s through the early 1990s.