Ford Builds the Truck — We Lock the Fuel
F-350 • F-450 • F-550 • F-600 • E-Series • F53 — All Ship With Exposed Fuel Caps
Every Ford chassis cab and cutaway rolls off the factory with a completely exposed, unlocked fuel cap. No door. No cover. No security. The Work Truck Fuel Vault is the bolt-on locking fuel door that Ford didn't include — purpose-built for F-350 through F-600, E-Series, and F53 commercial platforms.
Founders Edition pricing — starting at $99.95 (Save up to $50)
The Factory Gap on Every Ford Work Truck
Ford sells more commercial chassis cabs than anyone. But every single one ships with zero fuel security — an exposed gas cap that anyone can access in seconds.
- Ford F-350 through F-600 chassis cabs have completely exposed fuel caps from the factory
- Ford E-350 and E-450 cutaways leave the fuel filler wide open for siphoning
- Locking gas caps offer minimal protection — pliers defeat them in seconds
- A single diesel theft event costs $500–$1,000 in fuel plus crew downtime
- Fleet managers lose thousands per year across Ford trucks with no fuel security
- Ford's factory build leaves fuel security to the upfitter — but most upfitters skip it too
One Product. Every Ford Commercial Chassis
The Work Truck Fuel Vault is the universal locking fuel door solution for the entire Ford commercial lineup. One product that protects every Ford work truck you own.
- Armored locking door covers the entire fuel filler area — cap, neck, and access point
- Fits all Ford commercial chassis: F-350, F-450, F-550, F-600, E-350, E-450, and F53
- Works with every body type — service bodies, flatbeds, dumps, utility, box trucks, shuttle buses
- Bolt-on install in 8–15 minutes — no drilling, cutting, or body modifications
- High-strength UV-stable composite built for jobsite abuse
- Proudly 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.
Ford Trucks in Every Industry Need This
Contractors & Trades
Ford F-550s are the backbone of the trades. Protect your diesel from overnight siphoning at the jobsite.
Municipal Fleets
City and county Ford fleets sit in open yards. Lock every fuel cap across your F-350 to F-600 fleet.
Utility & Telecom
Ford E-Series and chassis cabs serve utility companies nationwide. Stop fuel theft on every truck.
Ford Commercial Dealers
Offer the Fuel Vault as a delivery accessory. It's the easiest upsell with real ROI for the customer.
Fleet Managers
Standardize fuel security across your entire Ford fleet. One part number, every chassis platform.
Remote Operations
Pipeline, utility, and construction sites miles from anyone. The Fuel Vault works 24/7 on every Ford.
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
Locking Fuel Cap vs. Fuel Vault
See how The Work Truck Fuel Vault compares to the alternatives.
| Feature | Locking Fuel Cap | The Work Truck Fuel Vault |
|---|---|---|
| Protection Type | Cap only | Full armored door over entire fuel access |
| Tamper Resistance | Low — pliers remove in seconds | High — armored composite, torx fasteners |
| Covers Fuel Filler Area | No — cap only | Yes — full hatch coverage |
| Prevents Siphoning | Partial — hose can bypass | Yes — sealed door blocks all access |
| Prevents Contamination | No | Yes — sealed against water, dirt, debris |
| Ford Chassis Fit | Generic / universal | Purpose-built for all Ford commercial chassis |
| Install Time | 1 minute screw-on | 8–15 min bolt-on (one-time, no drilling) |
| Warranty | None or 90 days | Limited Lifetime Warranty |
Feature comparison between standard locking fuel cap and The Work Truck Fuel Vault
Protection Type
Cap only
Full armored door over entire fuel access
Tamper Resistance
Low — pliers remove in seconds
High — armored composite, torx fasteners
Covers Fuel Filler Area
No — cap only
Yes — full hatch coverage
Prevents Siphoning
Partial — hose can bypass
Yes — sealed door blocks all access
Prevents Contamination
No
Yes — sealed against water, dirt, debris
Ford Chassis Fit
Generic / universal
Purpose-built for all Ford commercial chassis
Install Time
1 minute screw-on
8–15 min bolt-on (one-time, no drilling)
Warranty
None or 90 days
Limited Lifetime Warranty
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
Which Ford trucks does the Fuel Vault fit?
The Work Truck Fuel Vault fits Ford F-350, F-450, F-550, and F-600 Chassis Cab, Ford E-350 and E-450, and the Ford F53 Workhorse chassis. It covers every Ford commercial platform with an exposed fuel cap.
Why don't Ford trucks come with a locking fuel door?
Ford chassis cab trucks are sold as incomplete vehicles — the fuel cap area is left exposed because the body upfitter finishes the build. Ford does not include a locking fuel door or fuel cap cover from the factory.
Is this better than a locking gas cap for my Ford?
Yes. A locking gas cap only protects the cap itself — thieves remove them in seconds with pliers. The Fuel Vault covers the entire fuel filler area with an armored door that cannot be pried open with hand tools.
Will it fit my Ford truck with a service body?
Yes. The Fuel Vault mounts to the Ford chassis at the fuel filler area. It works with Knapheide, Reading, Monroe, Scelzi, and every other service body, utility body, flatbed, and dump configuration.
How long does installation take?
8 to 15 minutes with basic hand tools. No drilling, cutting, or body modifications required. Many fleet shops install them at delivery.
Does it work with both diesel and gas Ford trucks?
Yes. The Fuel Vault protects the fuel filler area regardless of fuel type. It works on both diesel and gasoline Ford commercial trucks.
How much does it cost?
Founders Edition pricing starts at $99.95 with free shipping within the U.S. Volume discounts are available for fleets and dealers.
Is there a warranty?
Yes — Limited Lifetime Warranty and a 30-day money-back guarantee on every unit.
Lock Every Ford in Your Fleet — Starting at $99.95
From F-350 to F-600, E-Series to F53 — one bolt-on locking fuel door that protects every Ford commercial chassis you own.
Secure checkout • Free US shipping • No charge until your order ships