Cometic Buick Big Block V8 .051in MLS Cylinder Head Gasket - 4.312in Bore

This is a Cometic Multi-Layer Steel (MLS) head gasket designed for Buick Big Block V8 engines. You get one gasket with a 4.312-inch bore and a compressed thickness of 0.098 inches, featuring a 0.051-inch uncompressed thickness. This gasket is built to handle the demands of high-output engines and fits a range of classic Buick vehicles, including models like the Electra, Riviera, and Skylark from the late 60s and early 70s.

Cometic constructs these MLS gaskets using multiple layers of stainless steel. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C) and works well with different head and block materials, including aluminum and cast iron. This construction provides increased strength and resistance to corrosion, while the embossed layers help create a tight seal without needing additional sealants. The center layer is stainless steel and can be varied in thickness to meet specific engine requirements.