Your Work Truck Needs a Locking Fuel Door
Ford and Ram Don't Include One. We Built It.
Every passenger car has a fuel door. But commercial chassis cabs — F-550s, E-450s, Ram 5500s — ship with a naked fuel cap and zero protection. The Work Truck Fuel Vault is the locking fuel door that should have been there from the factory.
Founders Edition pricing — starting at $99.95 (Save up to $50)
No Fuel Door From the Factory
Chassis cab trucks are sold as incomplete vehicles. The body upfitter adds the service body, utility bed, or box — but nobody adds a fuel door.
- Ford and Ram sell chassis cabs without any fuel filler protection
- The fuel cap sits completely exposed on the side of the truck
- Anyone can access, siphon, or contaminate your fuel in seconds
- Body upfitters lock every tool compartment but leave the fuel wide open
- Locking gas caps are a temporary fix — thieves defeat them easily
- No OEM option exists for a locking fuel door on commercial chassis cabs
The Locking Fuel Door That Should Exist
The Work Truck Fuel Vault fills the gap that Ford, Ram, and every upfitter has ignored. A real locking fuel door — armored, lockable, and bolt-on.
- Armored locking door covers the entire fuel filler area
- Tumbler lock with security torx fasteners — tamper-proof
- High-strength UV-stable composite built for commercial use
- Bolt-on install in 8–15 minutes — no drilling or cutting
- Works with every body type and upfitter configuration
- 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.
Every Work Truck Needs a Fuel Door
Contractors
Your truck parks at the jobsite overnight. A locking fuel door keeps your diesel where it belongs.
Fleet Managers
Standardize fuel security across your entire fleet with one bolt-on product.
Government Fleets
City, county, and state trucks — lock every fuel cap with an armored door.
Utility Companies
Trucks that operate in remote areas need locked fuel, not just locked tools.
Dealers & Upfitters
Add a locking fuel door to every chassis cab build. Customers will notice.
Service Companies
HVAC, plumbing, electrical — lock the fuel on every service truck.
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 is a locking fuel door?
A locking fuel door is a hinged, lockable cover that mounts over the fuel filler area of a vehicle. Unlike a locking fuel cap, it protects the entire access point — cap, filler neck, and surrounding area.
Why don't work trucks come with a locking fuel door?
Most commercial trucks are sold as chassis cabs — incomplete vehicles. The body upfitter finishes the build but rarely includes fuel security. The fuel cap is left completely exposed.
What trucks does the Fuel Vault fit?
Ford F-550, F-600, E-350, E-450, and Ram 5500 chassis cabs with any body type — service, utility, flatbed, dump, box, and more.
Does installation require drilling?
No. The Fuel Vault bolts on using existing mounting points. No drilling, cutting, or body modifications. 8–15 minutes with basic hand tools.
How does the lock work?
Tumbler lock with security torx fasteners. The lock is recessed and the fasteners are tamper-resistant — no exposed bolts to grip or pry.
How much does it cost?
Founders Edition pricing starts at $99.95 with free shipping. Volume discounts for fleets of 5+ trucks.
Is there a warranty?
Yes — Limited Lifetime Warranty and a 30-day money-back guarantee.
Add the Fuel Door Ford Forgot — Starting at $99.95
Bolt-on locking fuel door for Ford and Ram chassis cabs. No drilling. 15-minute install. Lifetime warranty.
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