Cometic Chevrolet 348/409 W-Series Big Block V8 .040in MLS Cylinder Head Gasket - 4.200in Bore

This product is a Cometic Multi-Layer Steel (MLS) cylinder head gasket designed for Chevrolet 348/409 W-Series Big Block V8 engines. It features a 4.200-inch bore and a compressed thickness of .040 inches. This gasket is built to handle the demands of high-output engines and is suitable for use with both aluminum and cast iron blocks, as well as aluminum heads. The MLS construction offers increased strength and resistance to corrosion, while the Viton rubber coating on the outer layers provides excellent heat resistance and sealing performance in harsh environments. No additional sealants are required for installation.

The gasket is constructed from multiple embossed layers of stainless steel. The outer layers are coated on both sides with Viton, a heat-resistant elastomer capable of withstanding temperatures up to 482 degrees Fahrenheit. This coating is designed to meet the challenges of various sealing conditions, load requirements, and surface finishes. The center layer is uncoated stainless steel, allowing for precise thickness adjustments to meet specific engine needs. This well-built gasket is a solid option for rebuilding or maintaining your engine.