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Cometic MLS cylinder head gasket for Chevrolet Mark-IV and GM Gen-V/VI big block V8 applications features a .040" thickness and 4.680" bore for round-bore engines. Built from multiple embossed stainless steel layers, it uses coated outer layers and an uncoated shim center to meet harsh sealing environments while managing clamp load and bore distortion for consistent combustion sealing.
Cometic Chevy Mark-IV GM Gen-V/VI Big Block V8 .040in MLS Cyl Head Gasket-4.680in Bore-Round Bore
