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This Cometic MLS head gasket for GM/Mercury Marine Big Block V8 Gen-IV/V/VI (4.580" bore) uses multiple embossed stainless steel layers with Viton-coated outer faces for heat-resistant sealing. Compressed thickness is 0.060" and the design includes four bolts in the lifter valley. MLS construction provides rebound, corrosion resistance and reliable sealing for aluminum-to-aluminum or aluminum-to-iron head applications without sealants.
Cometic Mercury/Chevy BB 4.580in Bore .026in MLS-5 Gen 4/5/6 Blocks Head Gasket
