RV Fuel Vault Doors
Locking Fuel Door — Small, Single
Part #WTFV-1001S
The standard bolt-on locking fuel door for Ford F-350 through F-600, Ram 3500 through 5500, and most chassis cab work trucks with an exposed fuel cap.
Small single locking fuel door for work trucks with a standard exposed fuel cap — Ford F-350 through F-600 and Ram 3500 / 4500 / 5500 chassis cabs with service, utility, dump, mechanics or flatbed bodies, plus Isuzu NPR / NQR cab-overs. Confirm your truck with Find My Fit™. Security screws included.
Common Questions
Does it require drilling?
No. It bolts on using the existing fuel filler area. Basic hand tools, about 15 minutes.
What trucks does this fit?
Ford F-350 through F-750, E-Series cutaways, Ram 3500 through 5500, Chevrolet and GMC 3500HD through 6500HD, Isuzu N-Series, Freightliner M2, and most bodies built on those chassis. Check the fitment guide for your exact truck.
How fast does it ship?
Orders ship UPS Ground from Sarasota, Florida, usually within 1–3 business days. The live UPS rate for your address is calculated at checkout, with no markup.
What if it does not fit?
Send it back within 30 days for a full refund. The hardware also carries a limited lifetime warranty.
More From the Shop
Locking Fuel Door — Small, 2-Pack
Two standard doors. The right choice for trucks with both a diesel fill and an exposed DEF cap, or for a two-truck crew.
Locking Fuel Door — Small, 3-Pack
Three standard doors for dual-tank trucks with a separate DEF cap, or a small fleet buying together.
Locking Fuel Door — Large, Single
The oversized door for medium-duty chassis with a larger filler bezel — Ford F-650/F-750, Freightliner M2, Isuzu FTR, and stripped chassis builds.
Fuel Vault + Bezel Bundle — Small, Single
One small Fuel Vault door plus a factory-replacement fuel cap housing bezel. The complete swap if your original bezel is cracked, faded, or already damaged.
Fuel Vault + Bezel Bundle — Small, 2-Pack
Two doors and two replacement bezels — the full rebuild for a truck with both a fuel and a DEF opening.
Fuel Vault + Bezel Bundle — Small, 3-Pack
Three doors and three replacement bezels for dual-tank and DEF-equipped work trucks.