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Cometic MLS head gasket for GM Gen‑V/VI Big Block V8 with a 4.630‑inch bore and 0.075" compressed thickness. The multi‑layer stainless construction features embossed outer layers coated in Viton for heat and chemical resistance, plus an uncoated shim center for adjustable thickness and rebound. This MLS gasket seals high‑output engines without sealants, evens sealing load, and reduces required clamp load to help protect bore integrity.
Cometic GM Gen-V/VI Big Block V8 .075in MLS Cylinder Head Gasket - 4.630in Bore
