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Cometic MLS cylinder head gasket for Chevrolet Mark-IV big block V8, 4.580" bore and .040" thickness. Featuring HP shim technology to increase clamp load around the combustion chamber for improved sealability on open-deck blocks, it uses multiple embossed AMP-coated and uncoated stainless steel layers. Embossed outer layers with Viton coating meet demanding sealing environments while reducing required clamp load and bore distortion.
Cometic Chevy Mark-IV Big Block V8 .040in MLS Cylinder Head Gasket - 4.580in Bores
