Cometic Chevrolet 4.3L Gen-1 90 Degree V6 .051in MLS Cylinder Head Gasket - 4.120in Bore

Starting with a compressed thickness of 0.051 inches, this Cometic Multi-Layer Steel (MLS) head gasket is built for the demands of high-output engines. It features multiple embossed layers of stainless steel, with the outer layers coated in Viton, a heat-resistant rubber material rated up to 482 degrees Fahrenheit. This construction helps prevent leaks and withstands the shearing forces between different metal types, making it suitable for both aluminum-to-aluminum and aluminum-to-cast iron block configurations.

The multi-layer design provides increased strength and the ability to rebound, while the stainless steel construction resists corrosion. The Viton coating on the outer layers is designed to handle harsh sealing environments and varying load conditions. The center layer is uncoated stainless steel and can be varied to achieve different thickness requirements, ensuring a precise fit for your specific engine build. This gasket does not require additional sealants for installation.

This gasket fits a wide range of Chevrolet and GMC vehicles from the mid-80s to the mid-90s, including popular models like the Chevrolet Astro, C1500, and S10, as well as the GMC C1500 and G1500. It's a solid option when you're rebuilding the top end of your 4.3L Gen-1 V6 engine.