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The Cometic MLS head gasket for GM/Mercury Marine Big Block V8 Gen-IV/V/VI is a .086" compressed-thickness, 4.500" bore gasket with four bolts in the lifter valley. Built from multiple embossed stainless steel layers, the outer layers are coated with Viton for heat resistance and corrosion protection. The uncoated center shim provides controlled thickness and the MLS construction offers strong sealing for high-output engines without sealants.
Cometic Chevy Big Block Gen 4/5/6 4.5in Bore .086 inch MLS-5 Head Gasket
