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The Cometic MLS head gasket for GM Gen‑V/VI Big Block V8 features a 4.630" bore and a .051" compressed operating thickness, offering multi-layer stainless sealing for high-output engines. Embossed outer layers are coated with Viton while a center shim layer remains uncoated to manage thickness. The design seals aluminum-to-aluminum or aluminum-to-cast-iron interfaces without sealants and resists corrosion.
Cometic GM Gen-V/VI Big Block V8 .051in MLS Cylinder 4.630in Bore Head Gasket
