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The Cometic MLS head gasket for GM/Mercury 8.1L (496ci) big block is a multi-layer steel gasket with a compressed operating thickness of .040" for the left side application. Outer layers are embossed and coated with Viton for heat and chemical resistance, while uncoated stainless shim layers manage thickness. MLS construction provides robust sealing for aluminum-to-aluminum or aluminum-to-iron combinations without sealants.
Cometic GM / Mercury 8.1L 496ci 110.49mm .040 inch MLS LHS Head Gasket
