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Cometic MLS head gasket for GM Gen‑V/VI Big Block V8 with a 4.630‑inch bore and 0.060" compressed operating thickness. Made from multiple embossed stainless steel layers with Viton‑coated outer faces, it resists corrosion and seals high‑output engines without sealants. The uncoated center shim can be varied for thickness needs, and the embossed layers help distribute clamp load while limiting bore distortion under shear between dissimilar metals.
Cometic GM Gen-V/VI Big Block V8 .060in MLS Cylinder Head Gasket - 4.630in Bore
