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Cometic MLS cylinder head gasket for Chevrolet Mark-IV big block V8, 4.500" bore and .040" thickness. Employing HP shim technology to increase clamp load around the combustion chamber, the gasket is formed from multiple embossed AMP-coated and uncoated stainless steel layers. Viton-coated outer layers resist harsh sealing environments and help distribute clamping load while minimizing bore distortion for reliable combustion sealing.
Cometic Chevy Mark-IV Big Block V8 .040in MLS Cylinder Head Gasket - 4.500in Bores
