Ram ProMaster Chassis Cab Locking Fuel Door
2014–2026 Ram ProMaster Chassis Cab — recessed filler neck with exposed cap. The Work Truck Fuel Vault bolts over the filler area and locks it shut. Small door.
Fitment Details
- Model Years
- 2014–2026
- Chassis
- Ram ProMaster
- Body Type
- Chassis Cab
- Factory Fuel Cap
- Recessed filler neck with exposed cap
- Recommended Door
- Small Standard
- Typical Doors Needed
- 1
Why This Truck Is a Target
- The factory cap on a Ram ProMaster 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.
Ram ProMaster Chassis Cab — Common Questions
Does the Work Truck Fuel Vault fit a 2014–2026 Ram ProMaster Chassis Cab?
Yes. The ProMaster Chassis Cab uses recessed filler neck with exposed cap. The recommended fit is the Small Fuel Vault door. Small door.
How many doors do I need for a Ram ProMaster Chassis Cab?
One door covers a standard ProMaster 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.