Utility Truck Fuel Cap Cover — Lock the Fuel
Every Tool Compartment Locks. Why Doesn't the Fuel?
Utility trucks have locking tool compartments on every side. But the fuel cap? Wide open. The Work Truck Fuel Vault is the locking fuel cap cover that gives your utility truck the fuel security it deserves.
Founders Edition pricing — starting at $99.95 (Save up to $50)
Tools Are Locked. Fuel Isn't.
Your utility body has locked compartments for every tool, part, and piece of equipment. But the most valuable consumable on the truck — the fuel — is completely exposed.
- Utility truck tool compartments all lock — the fuel cap doesn't
- Utility trucks work remote service calls and park along roads
- Fuel caps on F-550, F-600, and Ram 5500 utility trucks are exposed
- Knapheide, Reading, and Monroe bodies don't include fuel doors
- Overnight yard parking makes utility trucks siphoning targets
- Locking gas caps are not designed for commercial use
Lock the Fuel Like You Lock the Tools
The Fuel Vault gives your utility truck the same level of fuel security that the body gives your tools. Armored, locking, bolt-on.
- Armored locking door over the fuel filler area
- Tumbler lock + security torx — same quality as body locks
- Fits Ford F-550, F-600, E-350, E-450, and Ram 5500
- Compatible with Knapheide, Reading, Monroe, and all utility bodies
- Bolt-on in 8–15 minutes — no drilling or cutting
- Made in the USA with Limited Lifetime Warranty
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.
Utility Truck Owners Who Need This
Utility Companies
Lock the fuel on every utility truck in the fleet.
Contractors
Service trucks with utility bodies need locked fuel.
Government
Municipal utility trucks need fuel security.
Fleet Managers
Standardize fuel locks across utility truck fleets.
Upfitters
Add a fuel door alongside the utility body install.
Telecom
Telecom utility trucks park in public areas. Lock the fuel.
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
Does the Fuel Vault fit utility trucks?
Yes. The Fuel Vault fits Ford F-550, F-600, E-350, E-450, and Ram 5500 based utility trucks. It mounts at the fuel filler area near the cab.
Which utility bodies is it compatible with?
Knapheide, Reading, Monroe, and all other utility bodies built on supported chassis. The Fuel Vault mounts to the chassis, not the body.
Why do utility trucks need fuel security?
Utility trucks work remote service calls, park along roadways, and sit in open yards overnight. The fuel cap is exposed and accessible to anyone.
How does it install?
Bolt-on in 8–15 minutes. No drilling or cutting.
How much?
From $99.95 with free shipping.
Warranty?
Limited Lifetime Warranty and 30-day money-back guarantee.
Lock Your Utility Truck Fuel — Starting at $99.95
Utility truck fuel cap cover. Armored locking door. Bolt-on. No drilling. Lifetime warranty.
Secure checkout • Free US shipping • No charge until your order ships
Related Pages
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Armored fuel cap cover for Monroe trucks.
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