Cometic AMC 390/401 Gen-3 V8 .080in MLS Cyl Head Gasket-4.380in Bore-With Indy Heads-18 Bolt Head

This is a Cometic Multi-Layer Steel (MLS) cylinder head gasket designed for AMC 390 and 401 Gen-3 V8 engines, specifically when using Indy heads. It has a 4.380-inch bore and an 18-bolt head configuration, with a compressed thickness of 0.080 inches. This gasket is built to handle the demands of high-output engines and is suitable for applications using aluminum heads with either aluminum or cast iron blocks.

The MLS construction uses multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C) and works well in various sealing environments. The center layer is stainless steel and can be varied to achieve different thicknesses, like the 0.080 inches on this particular gasket. These gaskets are designed to seal effectively without the need for additional sealants.

This gasket fits a range of vehicles, including American Motors Ambassador, Javelin, and Matador models from the early to mid-1970s, as well as Jeep Cherokee, J10, J20, and Wagoneer models from the mid to late 1970s. It's a well-built component for rebuilding or upgrading your AMC V8 engine.