The Most Rugged Locking Fuel Door on the Market
Armored Composite • Tumbler Lock • Bolt-On in 15 Minutes
Work trucks take abuse that passenger vehicles never see. Your fuel door should be just as tough. The Work Truck Fuel Vault is the rugged locking fuel door engineered for commercial fleets — UV-stable, impact-resistant, and tamper-proof.
Founders Edition pricing — starting at $139.95 (Save up to $60)
Your Fuel Access Is the Weakest Link
Work trucks are built tough. But the fuel cap area on every chassis cab is completely exposed — no door, no lock, no protection.
- Chassis cab trucks ship with zero fuel filler protection from the factory
- Standard locking gas caps are flimsy plastic — not built for commercial use
- Jobsite conditions destroy cheap aftermarket accessories in months
- UV exposure, road debris, and chemicals degrade generic fuel caps quickly
- Exposed fuel caps invite theft, siphoning, and contamination
- Fleet managers waste time and money replacing broken locking caps
Rugged Protection Built to Last
The Work Truck Fuel Vault is the armored fuel door engineered from the ground up for commercial work trucks. No compromises.
- High-strength UV-stable composite — survives years of jobsite abuse
- Tumbler lock with security torx fasteners — tamper-proof hardware
- Full coverage of the fuel filler area — cap, neck, and access point
- Bolt-on install in 8–15 minutes — no drilling, cutting, or modifications
- Fits Ford F-550, F-600, E-350, E-450, and Ram 5500 chassis cabs
- Designed and manufactured in Sarasota, Florida, USA
The Part The Factory Forgot
The Work Truck Fuel Vault is an armored, locking fuel door that covers the entire fuel access area on your work truck. No more exposed caps. No more easy targets.
Why Didn't This Exist Before?
Despite billions lost to fuel theft every year, nobody built a real solution for commercial work trucks. Here's why.
"Good Enough" Thinking
The industry defaulted to cheap aftermarket locking gas caps. A $15 key-locked cap was considered good enough — until thieves proved otherwise with a pair of pliers.
Upfitters Focus on the Body, Not the Cap
Manufacturers like Knapheide and Reading engineer every compartment lock on the service body — but the chassis fuel pocket belongs to Ford or Ram. Nobody owned the gap.
The Zero-Drill Engineering Problem
Consumer billet doors are made for flat pickup beds. The recessed fuel pocket on a commercial chassis is a completely different geometry — and drilling risks voiding the chassis warranty.
The Cost Was Just "Absorbed"
Fleets treated fuel theft like weather damage. A $500 siphoning hit got buried in operating expenses. Without a purpose-built product available, the problem was simply accepted.
The Work Truck Fuel Vault is the industry's first drop-in armored fuel door that uses existing factory mounting points. No drilling. No cutting. No warranty risk.
Built for Trucks That Work Hard
Construction
Mud, gravel, and concrete dust — the Fuel Vault shrugs it off.
Utility
Remote service calls in all weather. The Fuel Vault locks your fuel no matter where you park.
Municipal
Plow trucks, dump trucks, water trucks — lock every fuel cap across the fleet.
Fleets
Standardize fuel security across every chassis cab in your fleet.
Upfitters
Add the Fuel Vault during the body build. Your customers will notice the quality.
Landscaping
Chipper trucks, dump trucks, and spray trucks — all parked outside, all need protection.
Chassis Compatibility
Purpose-built for the most popular commercial chassis platforms in the industry.
Ford
Super Duty & Commercial 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 Cab Heavy Duty
- Ram 3500 Chassis Cab
- Ram 4500 Chassis Cab
- Ram 5500 Chassis Cab
Our Guarantee
Limited Lifetime Warranty
Built to last. Warranted against defects in material and workmanship for the life of the vehicle on which it was originally installed.
30-Day Money Back
Not satisfied? Return within 30 days of receipt for a full refund. No questions asked.
Free Replacements
If your Fuel Vault is defective under normal use within the warranty period, we replace it at no charge.
Frequently Asked Questions
What makes this fuel door "rugged"?
The Fuel Vault is made from high-strength UV-stable composite — the same class of material used in aerospace and defense. It resists impacts, UV degradation, chemicals, and extreme temperatures.
Can it handle jobsite conditions?
Absolutely. The Fuel Vault is designed for work trucks that operate in construction, utility, municipal, and landscaping environments. Mud, gravel, road debris — it handles all of it.
What trucks does it fit?
Ford F-550, F-600, E-350, E-450, and Ram 5500 chassis cabs with service bodies, utility bodies, flatbeds, and more.
How does it lock?
Tumbler lock with security torx fasteners. No exposed bolts to grip, pry, or remove.
How long does installation take?
8 to 15 minutes with basic hand tools. No drilling or cutting required.
How much does it cost?
Founders Edition pricing starts at $139.95 with free shipping.
Is there a warranty?
Yes — Limited Lifetime Warranty and a 30-day money-back guarantee.
Get the Toughest Fuel Door on the Market — $139.95
Your work truck is built to last. Your fuel door should be too. Bolt-on. No drilling. Lifetime warranty.
Secure checkout • Free US shipping • No charge until your order ships