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Cometic MLS head gasket for GM Gen‑V/VI Big Block V8 with a 4.630‑inch bore and 0.050" compressed operating thickness. Constructed from three to five stainless steel layers, the embossed outer layers are coated with Viton to handle harsh sealing environments and high temperatures. The uncoated center shim allows thickness variation, improves load distribution, and reduces required clamp load to help prevent bore distortion.
Cometic GM Gen-V/VI Big Block V8 .050in MLS Cylinder Head Gasket - 4.630in Bore
