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The Cometic StreetPro top-end gasket kit for Chevrolet Mark‑IV Big Block V8 (4.375 in bore, 0.051 in MLS head gasket) includes head gaskets and seals for a top-end rebuild. StreetPro kits combine cost-sensitive packaging with quality materials such as MLS, AFM, aramid fiber and armor-clad components. The embossed MLS construction adapts to varied surface finishes and clamp conditions while aiming to reduce bore distortion under load.
Cometic Chevy Mark-IV Big Block V8 Top End Gasket Kit-4.375in Bore-.051in MLS Cylinder Head Gasket
