Cometic Chevy 229/262 V-6 4.3L 4.06in Bore .040 inch MLS Head Gasket

Starting with a compressed operating thickness of 0.040 inches, this Cometic Multi-Layer Steel (MLS) head gasket is built for serious sealing. It's constructed from multiple layers of stainless steel, with the outer layers getting a tough coating of Viton, a heat-resistant rubber material that can handle up to 482 degrees Fahrenheit. This construction means the gasket can handle the stresses between aluminum heads and cast iron blocks, and it's designed to seal tightly without needing any extra sealants.

The multi-layer steel design gives this gasket increased strength and the ability to rebound, which helps it resist corrosion and maintain a solid seal even under high output conditions. The center layer is plain stainless steel, and Cometic can vary this layer to achieve different thicknesses, like the 0.040 inches found here. This gasket fits a wide range of Chevrolet and GMC vehicles, including popular models like the Chevrolet Astro, GMC C1500, and Chevrolet S10, making it a solid option for many 4.3L V6 engine rebuilds.