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The Cometic MLS head gasket for GM Gen‑V/VI Big Block V8 fits a 4.540" bore with a compressed operating thickness of .040" and provides a multi-layer stainless steel seal for high-output engines. Its embossed outer layers are coated with Viton, while an uncoated shim layer controls thickness so the gasket rebounds, resists corrosion and seals without sealants across aluminum and cast-iron interfaces.
Cometic GM Gen-V/VI Big Block V8 4.540in Bore .040in MLS Cylinder Head Gasket
