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The Cometic MLS head gasket for Chevrolet Mark‑IV GM Gen‑V/VI Big Block V8 (4.570" bore, .098" compressed thickness) combines embossed stainless steel layers with Viton-coated outer faces for robust sealing without sealants. Ideal for aluminum-to-aluminum or aluminum-to-iron head/block pairs, the multi-layer construction rebounds under load, resists corrosion and reduces required clamp load to help limit bore distortion while allowing undersized water ports for aftermarket heads.
Cometic Chevrolet Mark-IV - GM Gen-V/VI Big Block V8 .098in MLS Cylinder Head Gasket - 4.570in Bore
