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The Cometic MLS head gasket for GM/Mercury Marine 1050 Gen-IV Big Block V8 (4.600in bore) is specified with a compressed thickness of 0.089" and designed to seal high-output engines without sealants. It combines embossed stainless outer layers coated with Viton and an uncoated stainless shim to provide strength, corrosion resistance, rebound capability, and improved load distribution that helps minimize bore distortion across aluminum and cast-iron interfaces.
Cometic GM/Mercury Marine 1050 Gen-IV Big Block V8 .086in MLS Cylinder Head Gasket-4.600in Bore
