Cometic Chevrolet 4.3L Gen-1 90 Degree V6 .056in MLS Cylinder Head Gasket - 4.060in Bore

If you're rebuilding the top end of your Chevrolet 4.3L Gen-1 V6, a quality head gasket is crucial for a good seal. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of higher output engines, ensuring your combustion chambers stay sealed tight. It's designed to fit a wide range of vehicles, including models like the Chevrolet Astro, C1500, and GMC Jimmy.

This gasket uses multiple layers of stainless steel for strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C). This advanced coating helps create a reliable seal against the block and head, even with dissimilar metals like aluminum heads and cast iron blocks. The center layer is stainless steel and can be varied to achieve different compressed thicknesses, with this particular gasket having a compressed thickness of 0.036 inches and a bore size of 4.060 inches.

Because it's an MLS gasket, it doesn't require any additional sealants, making installation more straightforward. Just ensure your block and head surfaces are clean and flat according to manufacturer specifications.