Cometic AMC 390/401 Gen-3 V8 .070in MLS Cylinder Head Gasket - 4.380in Bore

Cometic Gasket is known for making well-built sealing solutions, and this Multi-Layer Steel (MLS) head gasket is a prime example. It’s designed for AMC 390 and 401 Gen-3 V8 engines, with a 4.380-inch bore and a compressed thickness of 0.070 inches. This gasket is built to handle the demands of higher output engines, providing 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 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 degrees Fahrenheit and works well in tough sealing environments. The center layer is stainless steel and can be varied to achieve different thicknesses, like the 0.070-inch spec on this particular gasket. Because it's an MLS design, it doesn't require any additional sealants and is suitable for use with aluminum heads on aluminum blocks, or aluminum heads on cast iron blocks, as it can manage the shearing forces between different metals.

This gasket fits a wide range of vehicles, including models like the American Motors AMX, Jeep CJ5, and Jeep J10. It’s a solid option for rebuilding or repairing your AMC V8 engine.