Fuel Protection Solutions
The Part the Factory Forgot
Armored, tamper-resistant locking fuel doors for RV motorhomes and commercial work trucks. Stop fuel theft, siphoning, contamination, and vandalism — no drilling required. Made in the USA.
Fuel Theft Is a $4.5 Billion Problem
U.S. fuel theft losses hit $4.5 billion in 2023 — up from $3.8 billion the year before. 83% of fleets experience regular fuel theft, and incidents surged 77% in 2023 alone. RV owners and fleet operators are prime targets — yet most vehicles leave the factory with nothing more than a flimsy, unlocked fuel door.
The Vulnerability
Factory fuel doors offer zero security against fuel theft, siphoning, or contamination — a locking fuel door is the fix
Built to Protect
Every Gas Protector product is engineered for maximum security with minimum hassle.
Tamper-Resistant Lock
High-security locking mechanism prevents unauthorized fuel access, siphoning, and contamination.
Armored Protection
High-strength, UV-stable composite material resists impacts, weather, and forced entry.
Easy Installation
Bolt-on design installs in 8–15 minutes with no drilling, cutting, or special tools required.
Lifetime Warranty
Built to last with a limited lifetime warranty and 30-day money-back satisfaction guarantee.
Made in America
Designed and manufactured in Sarasota, Florida with premium American-sourced materials.
Factory-Finished Look
Seamlessly integrates with your vehicle for a clean, OEM-quality appearance.
Protection for Every Vehicle
Whether you own an RV or manage a fleet of work trucks, we have the right fuel protection solution for you.
The RV Fuel Vault™
Locking fuel door for Super C, Class C & Class A motorhomes. Fits Ford F-550, F-600, F53, Ram 5500 chassis.
- No Drilling
- Lifetime Warranty
- USA Made
The Work Truck Fuel Vault™
Locking fuel door for Ford F-350 through F-600 and Ram 3500–5500 commercial work trucks. Stop fuel theft across your fleet.
- Bolt-On Install
- Proven ROI
- Fleet Pricing
Engineered for Maximum Security
Our heavy-duty locking fuel door replaces your factory fuel filler housing with a rugged, tamper-proof assembly. High-strength UV-stable composite with Torx security fasteners — designed and manufactured in Sarasota, FL.
Locking Bezel Face
Heavy-duty keyed lock with tamper-resistant bolt pattern around the full perimeter.
Precision Engineering
Hinged access door with industrial-grade hardware designed to withstand forced entry.
Complete Assembly
Full fuel filler neck and bezel assembly — a direct replacement that bolts on without drilling.
Protection in 3 Easy Steps
Choose Your Vehicle
Select the Fuel Vault designed for your specific RV or work truck model.
Install in Minutes
Simple bolt-on installation — no drilling, cutting, or special tools needed.
Drive with Confidence
Your fuel is locked and protected 24/7, backed by a lifetime warranty.
Fits Your Vehicle
Purpose-built for the most popular commercial and RV chassis platforms in America.
Ford Chassis
- F-350 Chassis Cab
- F-450 Chassis Cab
- F-550 Chassis Cab
- F-600 Chassis Cab
- E-350 / E-450
- F53 Workhorse
Ram Chassis
- Ram 3500 Chassis Cab
- Ram 4500 Chassis Cab
- Ram 5500 Chassis Cab
Compatible Body Types
Integrates with every major work truck body and upfit configuration.
Built to Integrate with Leading Upfitters
The Fuel Vault integrates seamlessly with body platforms from the industry's most respected truck equipment manufacturers.
Knapheide
250+ upfit partners, 200+ distributors — the largest work-truck body network in the U.S.
Reading Truck
26 company-owned centers plus 100+ authorized distributors across North America.
Monroe Truck Equipment
Full-service work-truck equipment company with multiple U.S. locations.
Auto Truck Group
Engineered vocational and fleet builds for commercial operators nationwide.
Scelzi
Western U.S. work-truck body specialists — service and contractor body leaders.
Locking Gas Cap vs. Fuel Vault
See why a locking gas cap is not enough.
| Feature | Locking Gas Cap | Fuel Vault |
|---|---|---|
| Covers entire fuel access area | ||
| Tamper-proof armored door | ||
| Prevents siphoning | ||
| Prevents fuel contamination | ||
| Resists pliers / hand tools | ||
| Torx security fasteners | ||
| No-drill bolt-on install | ||
| Ford & Ram chassis fit | ||
| Lifetime warranty |
Covers entire fuel access area
Tamper-proof armored door
Prevents siphoning
Prevents fuel contamination
Resists pliers / hand tools
Torx security fasteners
No-drill bolt-on install
Ford & Ram chassis fit
Lifetime warranty
Fuel Theft Prevention FAQ
Common questions about locking fuel doors, gas cap locks, diesel theft prevention, and vehicle fitment.
Ready to Protect Your Fuel?
Join thousands of RV owners and fleet operators who trust Gas Protector to keep their fuel safe, secure, and uncompromised.