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Cometic StreetPro top‑end gasket kit for Chevrolet 366 Mark‑IV big block V8, includes a .040in MLS cylinder head gasket for a 4.000in bore. StreetPro kits bundle MLS, AFM, aramid fiber, and armor‑clad materials to deliver quality sealing at a budget‑minded price for street‑rod and rebuild projects. MLS head gasket construction uses multiple embossed layers to handle diverse sealing surfaces and loads.
Cometic Chevy 366 Mark-IV Big Block V8 Top End Gasket Kit-4.000in Bore-.040in MLS Cyl Head Gasket
