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This Cometic MLS head gasket for GM/Mercury Marine Big Block V8 (Gen IV/V/VI) is a multi-layer steel design with embossed outer layers coated in Viton for heat and chemical resistance. Compressed thickness is .027", bore is 4.600", and it includes four bolts in the lifter valley. The MLS construction provides rebound, corrosion resistance and consistent sealing performance for high-output marine and automotive applications.
Cometic Mercury / Chevy Big Block 4.6in Bore .027 inch MLS Head Gasket
