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The Cometic StreetPro top-end gasket kit for Chevrolet Mark‑IV Big Block V8 (4.560 in bore, 0.040 in MLS head gasket) supplies the head gasket and related seals for a top-end rebuild. StreetPro kits target budget-minded builders while maintaining quality through MLS, AFM, aramid fiber and armor-clad parts. Embossed MLS construction conforms to diverse surface finishes and clamp loads, providing dependable sealing without excessive clamp requirements.
Cometic Chevy Mark-IV Big Block V8 Top End Gasket Kit-4.560in Bore-.040in MLS Cylinder Head Gasket
