Cometic Buick 400/430/455 V8 4.400 inch Bore .086 inch MLS-5 Head Gasket

This product is a Cometic Multi-Layer Steel (MLS) head gasket designed for Buick 400, 430, and 455 V8 engines. It features a 4.400 inch bore and a compressed operating thickness of 0.086 inches. This gasket is built to handle the demands of high-output engines and is suitable for applications using aluminum heads with either aluminum or cast iron blocks, as it can manage the shearing forces between different metals.

The gasket is constructed from multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are embossed and coated with Viton, a heat-resistant rubber material that can withstand temperatures up to 482 degrees Fahrenheit. This coating ensures a strong seal even in harsh conditions and on various surface finishes. The center layer is uncoated stainless steel, allowing for precise thickness control to meet specific engine requirements. Because it's an MLS design, it does not require any additional sealants for installation.

This head gasket fits a range of Buick vehicles from the late 1960s through the mid-1970s, including models like the Electra, Riviera, and LeSabre. It's a well-built component for rebuilding or maintaining your Buick big block V8.