Horton Emergency Vehicles Model 623 Type I Locking Fuel Door
2012–2026 Horton Emergency Vehicles Model 623 Type I — dual exposed caps (fuel + def). The Work Truck Fuel Vault bolts over the filler area and locks it shut. Standard fit.
Fitment Details
- Model Years
- 2012–2026
- Chassis
- Ford F-550, Ram 4500
- Body Type
- Ambulance
- Factory Fuel Cap
- Dual exposed caps (fuel + DEF)
- Recommended Door
- Small Standard
- Typical Doors Needed
- 2
Why This Truck Is a Target
- The factory cap on a Ford F-550, Ram 4500 is fully exposed — no lock, no cover.
- A ambulance 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.
Horton Emergency Vehicles Model 623 Type I — Common Questions
Does the Work Truck Fuel Vault fit a 2012–2026 Horton Emergency Vehicles Model 623 Type I?
Yes. The Model 623 Type I uses dual exposed caps (fuel + def). The recommended fit is the Small Fuel Vault door. Standard fit.
How many doors do I need for a Horton Emergency Vehicles Model 623 Type I?
Most Model 623 Type I builds need 2 doors — one for the diesel fill and one for the DEF cap. Our 2-pack and 3-pack save money versus buying singles.
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 ambulance build.
What is the warranty?
Limited lifetime warranty on the hardware, plus a 30-day money-back guarantee. Free shipping within the United States.