Cometic Chevrolet 4.3L Gen-1 90 Degree V6 .027in MLS Cylinder Head Gasket - 4.060in Bore

This Cometic Multi-Layer Steel (MLS) head gasket is built with a compressed operating thickness of 0.027 inches and a 4.060-inch bore, specifically designed for Chevrolet 4.3L Gen-1 90-degree V6 engines. MLS gaskets are a smart choice for high-output engines because they offer excellent sealing performance without needing additional sealants, making them suitable for combinations of aluminum and cast iron blocks and heads. They can handle the stresses that arise when different metals are joined together.

The strength of this gasket comes from its multiple layers of stainless steel, which also help it resist corrosion and maintain its shape. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit and works well in tough sealing environments. The center layer is uncoated stainless steel and can be varied to achieve different thicknesses, like the 0.027 inches found in this particular gasket. This construction means it's well-suited for a wide range of vehicles, including models like the Chevrolet Astro, C1500, and GMC C1500.