Ford F-650 Straight Frame Locking Fuel Door
2016–2026 Ford F-650 Straight Frame — exposed threaded fuel cap, no factory door. The Work Truck Fuel Vault bolts over the filler area and locks it shut. Larger filler bezel — use the Large door.
Fitment Details
- Model Years
- 2016–2026
- Chassis
- Ford F-650
- Body Type
- Medium Duty
- Factory Fuel Cap
- Exposed threaded fuel cap, no factory door
- Recommended Door
- Large Standard
- Typical Doors Needed
- 1
Why This Truck Is a Target
- The factory cap on a Ford F-650 is fully exposed — no lock, no cover.
- A medium duty build parks outside overnight where siphoning happens.
- One siphoning event costs $500 to $1,000 in fuel plus lost work hours.
- Contamination — sugar, water, dirt — can destroy an entire fuel system.
No Drilling
Bolts on with existing hardware.
15 Minutes
Basic hand tools, one person.
Made in the USA
Built in Sarasota, Florida.
Ford F-650 Straight Frame — Common Questions
Does the Work Truck Fuel Vault fit a 2016–2026 Ford F-650 Straight Frame?
Yes. The F-650 Straight Frame uses exposed threaded fuel cap, no factory door. The recommended fit is the Large Fuel Vault door. Larger filler bezel — use the Large door.
How many doors do I need for a Ford F-650 Straight Frame?
One door covers a standard F-650 Straight Frame. If your truck has a separate exposed DEF cap, add a second door.
Do I have to drill anything?
No. The Fuel Vault bolts on using the existing filler area. No drilling, no cutting, no welding. Basic hand tools, about 15 minutes.
Will it interfere with my service body or upfit?
The Fuel Vault mounts to the chassis fuel filler area, not the body. It does not interfere with compartments, shelving, cranes, or racks on a medium duty build.
What is the warranty?
Limited lifetime warranty on the hardware, plus a 30-day money-back guarantee. Free shipping within the United States.