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Cometic MLS head gasket for GM Pro Stock 800 CI (4.800 in bore) uses a multi‑layer stainless steel stack with a compressed operating thickness of 0.056 in. Embossed outer layers are coated with Viton for high‑temperature sealing and to handle challenging surface conditions; the uncoated center shim allows thickness changes. The MLS assembly rebounds, resists corrosion and spreads clamp load to help prevent bore distortion.
Cometic GM Pro Stock 800 CI .056in MLS Cylinder Head Gasket - 4.800in Bore
