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The Cometic MLS cylinder head gasket for GM/Mercury Marine 1050 Gen‑IV big block V8s is a .040 inch multi-layer steel head gasket with a 4.530 inch bore and two slotted lifter valley bolts, specified for demanding marine and automotive use. Cometic's MLS design pairs embossed, Viton-coated outer layers with an uncoated stainless shim center to provide rebound, corrosion resistance, and reliable sealing across mixed-material interfaces without the need for sealants.
Cometic GM/Mercury Marine 1050 Gen-IV Big Block V8 .040in MLS Cylinder Head Gasket-4.530in Bore
