Fleet Fuel Siphoning Prevention
A Thief Drains 60 Gallons in 5 Minutes. Here's How to Stop It.
Fuel siphoning is the most common form of fuel theft in commercial fleets. A simple hose and 5 minutes is all it takes. The Work Truck Fuel Vault physically blocks siphoning by covering the entire filler area.
Founders Edition pricing — starting at $139.95 (Save up to $60)
Siphoning Is Too Easy
All a thief needs is a hose and a container. The fuel cap comes off, the hose goes in, and your fuel goes out. Five minutes later, you're empty.
- Fuel siphoning requires only a hose and 5 minutes of access
- Standard fuel caps provide zero siphoning resistance
- Locking caps are removed with pliers — siphoning continues
- Anti-siphon inserts are pulled out or bypassed with narrow hoses
- Fleet-wide siphoning losses add up to thousands per year
- Morning downtime from empty tanks disrupts schedules and costs money
Block the Siphon. Block the Access.
The Work Truck Fuel Vault prevents siphoning by eliminating access. An armored locking door covers the entire filler area. No hose gets in.
- Armored door completely covers the filler area — no hose insertion possible
- Tumbler lock + security torx — can't be opened without the key
- No anti-siphon insert needed — the door blocks everything
- No refueling restrictions — unlock, fuel, lock, done
- Bolt-on in 8–15 minutes — no drilling or modifications
- Fleet-wide deployment with one part number
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.
Stop Siphoning on Every Truck
Fleet Managers
Eliminate siphoning fleet-wide. One Fuel Vault per truck, done.
Contractors
Your trucks park at jobsites overnight. Block the siphon.
Government
Municipal fleets are prime siphoning targets. Lock every truck.
Utility
Remote truck parking makes siphoning easy. Make it impossible.
Upfitters
Add siphoning prevention to every chassis cab build.
Night Operations
Trucks that park overnight need siphoning prevention. Period.
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
How does fuel siphoning work?
A thief removes or bypasses the fuel cap, inserts a hose into the filler neck, and uses gravity or a pump to drain the fuel into containers. A full tank can be siphoned in under 5 minutes.
Why don't anti-siphon inserts work?
Anti-siphon inserts sit inside the filler neck and can be pulled out with pliers or bypassed with a narrower hose. They also restrict fuel flow during refueling and can cause fill issues.
How does the Fuel Vault prevent siphoning?
The Fuel Vault covers the entire fuel filler area with an armored locking door. A thief can't reach the filler neck at all — no hose insertion is possible.
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 or cutting.
How much?
From $139.95 with free shipping.
Warranty?
Limited Lifetime Warranty and 30-day money-back guarantee.
Prevent Siphoning Fleet-Wide — Starting at $139.95
Fleet fuel siphoning prevention. Armored locking door. Bolt-on. No drilling. Lifetime warranty.
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