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Cometic MLS head gasket for Chevrolet Mark-IV Big Block V8, 4.630in bore with a compressed operating thickness of 0.023in. The gasket uses multiple embossed stainless steel layers with AMP coatings and an uncoated center shim; outer layers are coated with Viton on both sides (heat resistant to 250 C/482 F). MLS construction provides dependable sealing without sealants, is suitable for aluminum-to-aluminum or aluminum-to-iron combinations, and helps conform load distribution while requiring less clamp load to limit bore distortion.
Cometic Chevrolet Mark-IV Big Block V8 .023in MLS Cylinder Head Gasket - 4.630in Bore
