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The Cometic StreetPro top-end gasket kit for Chevrolet Mark‑IV Big Block V8 (4.630 in bore, 0.051 in MLS head gasket) includes the gaskets and seals required for a top-end rebuild. StreetPro kits prioritize affordability and use quality materials such as MLS, AFM, aramid fiber and armor-clad components. Embossed MLS layers conform to various surface finishes and clamp conditions to provide reliable sealing while reducing clamp-induced bore distortion.
Cometic Chevy Mark-IV Big Block V8 Top End Gasket Kit-4.630in Bore-.051in MLS Cylinder Head Gasket
