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Cometic's .030" MLS cylinder head gasket fits Chevrolet Mark-IV and GM Gen-V/VI Big Block V8 with a 4.570" bore, built for aftermarket heads and high-output engines. The multi-layer stainless design with embossed outer layers coated in Viton seals without additional sealants, tolerates differential shearing between materials and rebounds under stress. The uncoated shim center supports tailored thickness for proper sealing.
Cometic Chevrolet Mark-IV - GM Gen-V/VI Big Block V8 .030in MLS Cylinder Head Gasket - 4.570in Bore
