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The Cometic StreetPro top-end gasket kit for Chevrolet Mark‑IV Big Block V8 (4.375 in bore) includes a 0.051 in MLS cylinder head gasket and the gaskets and seals needed for a top-end rebuild. StreetPro kits prioritize cost-conscious builders while using quality materials—MLS, AFM, aramid fiber and armor-clad components. Embossed MLS layers handle harsh sealing environments, conform load across sealing areas and help reduce bore distortion.
Cometic Chevy Mark-IV Big Block V8 Top End Gasket Kit-4.375in Bore-.051in MLS Cylinder Head Gasket
