The Only Locking Fuel Door for Work Trucks
No OEM Option. No Competitor. No Alternative. Just the Fuel Vault.
Search everywhere. Call every dealer. Check every catalog. There is no other locking fuel door for commercial chassis cab trucks. The Work Truck Fuel Vault is the only one — and it's available right now.
Founders Edition pricing — starting at $99.95 (Save up to $50)
There's No Alternative
Ford doesn't offer one. Ram doesn't offer one. No aftermarket company makes one. If you want a locking fuel door for your work truck, there's exactly one option.
- No OEM locking fuel door exists for any chassis cab truck
- No aftermarket competitor has developed a fuel door product
- Locking gas caps are the only alternative — and they're not fuel doors
- Body upfitters don't offer fuel door options in their catalogs
- The industry has ignored this problem for decades
- Millions of chassis cab trucks operate without any fuel door
Now There's One Option
The Work Truck Fuel Vault is the only locking fuel door on the market for commercial chassis cab trucks. Purpose-built, patent-pending, and available now.
- The only aftermarket locking fuel door for chassis cabs
- Armored composite construction with tumbler lock
- Security torx fasteners — tamper-resistant design
- Bolt-on in 8–15 minutes — no drilling or cutting
- Fits Ford F-550, F-600, E-350, E-450, and Ram 5500
- Patent-pending design — Made in the 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.
The Only Choice for Every Application
Contractors
The only fuel door for your service truck. Get it before everyone else does.
Fleets
The only fuel door for fleet-wide deployment. One product, every truck.
Government
Sole-source procurement — the only product of its kind.
Utility
No alternative exists. The Fuel Vault is the only option.
Dealers
Stock the only locking fuel door on the market. No competition.
Early Adopters
Be first with the only product that solves this problem.
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
Is this really the only locking fuel door for work trucks?
Yes. As of 2026, the Work Truck Fuel Vault is the only aftermarket locking fuel door purpose-built for commercial chassis cab trucks. No OEM option exists. No competitor makes one.
Why hasn't anyone else made one?
The commercial truck aftermarket has focused on body accessories, toolboxes, and lighting. Nobody addressed the fuel filler vulnerability until AMI Transportation developed the Fuel Vault.
What about locking gas caps?
Locking gas caps are fuel caps, not fuel doors. They protect only the cap opening and are easily defeated. A fuel door covers the entire filler area — that's a different product entirely.
What trucks does it fit?
Ford F-550, F-600, E-350, E-450, and Ram 5500 chassis cabs.
How does it install?
Bolt-on in 8–15 minutes. No drilling.
Cost?
From $99.95 with free shipping.
Warranty?
Limited Lifetime Warranty and 30-day money-back guarantee.
Get the Only Locking Fuel Door — Starting at $99.95
The only locking fuel door for work trucks. No alternative exists. Bolt-on. Lifetime warranty.
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