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4C4Z9030A
This is a diesel fuel tank filler cap with a retaining tether, made for certain heavy-duty Ford trucks. It seals the filler neck to keep dirt, water, and fuel vapors out, and the tether prevents it from being lost during refueling. Replace it if the original cap is missing, cracked, or if the seal is worn and causing fuel or vapor leaks.
Direct replacement for 2009 Ford F-650 and F-750 diesel models. The seller also lists cross‑reference to International 3548221C2, but that cap fits Navistar trucks with a 2-inch filler neck; confirm dimensional compatibility before using on International applications.
Part Number: 4C4Z9030A
FUEL CAP 3548221C2
Dealer: Post Onsite
Compatibility, alternatives, and more
