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Cometic's .045" MLS cylinder head gasket for Chevrolet Mark-IV and GM Gen-V/VI Big Block V8 has a 4.310" bore and embossed stainless layers with Viton-coated faces. Designed for high-output engines and aftermarket heads, it seals without messy sealants and withstands shearing between aluminum and iron components. The layered construction improves rebound, corrosion resistance and load distribution across the sealing area.
Cometic Chevrolet Mark-IV - GM Gen-V/VI Big Block V8 .045in MLS Cylinder Head Gasket - 4.310in Bore
