Ford F-350 Chassis Cab Locking Fuel Door
2017–2026 Ford F-350 Chassis Cab — exposed threaded fuel cap, no factory door. The Work Truck Fuel Vault bolts over the filler area and locks it shut. Single driver-side fill. Small door is the standard fit on gas and diesel.
Fitment Details
- Model Years
- 2017–2026
- Chassis
- Ford F-350
- Body Type
- Chassis Cab
- Factory Fuel Cap
- Exposed threaded fuel cap, no factory door
- Recommended Door
- Small Standard
- Typical Doors Needed
- 1
Why This Truck Is a Target
- The factory cap on a Ford F-350 is fully exposed — no lock, no cover.
- A chassis cab 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-350 Chassis Cab — Common Questions
Does the Work Truck Fuel Vault fit a 2017–2026 Ford F-350 Chassis Cab?
Yes. The F-350 Chassis Cab uses exposed threaded fuel cap, no factory door. The recommended fit is the Small Fuel Vault door. Single driver-side fill. Small door is the standard fit on gas and diesel.
How many doors do I need for a Ford F-350 Chassis Cab?
One door covers a standard F-350 Chassis Cab. 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 chassis cab build.
What is the warranty?
Limited lifetime warranty on the hardware, plus a 30-day money-back guarantee. Free shipping within the United States.