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The Cometic MLS cylinder head gasket for GM/Mercury Marine 1050 Gen‑IV big block V8s is a .030 inch multi-layer steel head gasket with a 4.530 inch bore and two slotted lifter valley bolts, engineered for demanding sealing in high-output service. Embossed outer layers coated with Viton and an uncoated stainless shim layer combine to resist corrosion, rebound under load, and accommodate mixed head/block materials while eliminating the need for sealants.
Cometic GM/Mercury Marine 1050 Gen-IV Big Block V8 .030in MLS Cylinder Head Gasket-4.530in Bore
