Cometic AMC 290/304/343/360 Gen-2/3 V8 .040in MLS Cylinder Head Gasket - 3.810in Bore

When you're rebuilding the top end of your AMC V8, whether it's in an American Motors car or an early Jeep, getting the cylinder head gasket right is crucial for sealing combustion. This Cometic Multi-Layer Steel (MLS) head gasket is built for those engines, specifically the 290, 304, 343, and 360 cubic inch V8s, with a 3.810-inch bore and a compressed thickness of 0.040 inches.

What makes these MLS gaskets stand out is their construction. They use multiple layers of stainless steel, which gives them increased strength and the ability to rebound, helping them resist corrosion and maintain a seal even with dissimilar metals like aluminum heads and cast iron blocks. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes, meaning you don't need to add any extra sealants during installation. The center layer is stainless steel, and Cometic can vary its thickness to meet different engine requirements, like the 0.040-inch compressed thickness on this particular gasket.

This gasket is a solid option for a wide range of American Motors vehicles from the late 60s through the late 70s, as well as many Jeep CJ models and Wagoneers from the 70s and early 80s. It’s designed to handle the demands of these classic V8s, providing a reliable seal for your engine build.