International DuraStar 4300 Locking Fuel Door
2010–2019 International DuraStar 4300 — exposed threaded fuel cap, no factory door. The Work Truck Fuel Vault bolts over the filler area and locks it shut. Legacy fleets still running.
Fitment Details
- Model Years
- 2010–2019
- Chassis
- International 4300
- 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 International 4300 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.
International DuraStar 4300 — Common Questions
Does the Work Truck Fuel Vault fit a 2010–2019 International DuraStar 4300?
Yes. The DuraStar 4300 uses exposed threaded fuel cap, no factory door. The recommended fit is the Large Fuel Vault door. Legacy fleets still running.
How many doors do I need for a International DuraStar 4300?
One door covers a standard DuraStar 4300. 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.