Cometic AMC 390/401 Gen-3 V8 .070in MLS Cylinder Head Gasket - 4.250in Bore

If you're rebuilding the top end of your AMC 390 or 401 Gen-3 V8, this Cometic Multi-Layer Steel (MLS) cylinder head gasket is a solid option. It's designed with a 4.250-inch bore and a compressed thickness of 0.070 inches, making it suitable for a range of AMC and Jeep applications from the late 1960s through the early 1990s, including models like the Jeep CJ series and American Motors AMX.

This gasket is constructed from 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 up to 482°F (250°C). This construction means the gasket seals effectively without needing additional sealants, and it's well-suited for joining aluminum heads to cast iron blocks, or aluminum to aluminum, as it can manage the shearing forces that can occur between different metals.