E-ONE (Emergency One) Aluminum Box Apparatus Locking Fuel Door
2005–2026 E-ONE (Emergency One) Aluminum Box Apparatus — exposed threaded fuel cap, no factory door. The Work Truck Fuel Vault bolts over the filler area and locks it shut. Verified fitment on record.
Fitment Details
- Model Years
- 2005–2026
- Chassis
- Ford F-550
- Body Type
- Fire Apparatus
- 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-550 is fully exposed — no lock, no cover.
- A fire apparatus 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.
E-ONE (Emergency One) Aluminum Box Apparatus — Common Questions
Does the Work Truck Fuel Vault fit a 2005–2026 E-ONE (Emergency One) Aluminum Box Apparatus?
Yes. The Aluminum Box Apparatus uses exposed threaded fuel cap, no factory door. The recommended fit is the Small Fuel Vault door. Verified fitment on record.
How many doors do I need for a E-ONE (Emergency One) Aluminum Box Apparatus?
One door covers a standard Aluminum Box Apparatus. 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 fire apparatus build.
What is the warranty?
Limited lifetime warranty on the hardware, plus a 30-day money-back guarantee. Free shipping within the United States.