Your E-350 Parks Everywhere — The Fuel Cap Is Always Exposed
Parking Lots • Loading Docks • Hotel Curbs • Church Lots — All Night, No Fuel Security
The Ford E-350 is the backbone of shuttle services, churches, non-profits, contractors, and delivery fleets. It parks in public places constantly — with a completely exposed fuel cap. The Work Truck Fuel Vault is the bolt-on locking fuel door that protects your E-350's fuel wherever it parks.
Founders Edition pricing — starting at $139.95 (Save up to $60)
The E-350 Parks in Public. The Fuel Cap Is Unprotected
Unlike trucks that park behind fences, E-350 vans and cutaways park at hotels, churches, event venues, and commercial lots. The fuel cap is accessible to anyone walking by.
- Ford E-350 cutaways and vans have completely exposed fuel caps from the factory
- E-350s park overnight in public parking lots, hotel curbs, and commercial areas
- Shuttle buses and passenger vans carry large fuel tanks — attractive to thieves
- Locking gas caps provide minimal protection against determined thieves
- Fuel contamination from water, sugar, or debris can destroy an E-350 engine
- Organizations often lack secure parking — churches, non-profits, rental fleets
Lock the Fuel on Your Ford E-350
The Work Truck Fuel Vault gives your E-350 the fuel security it needs — whether it's a shuttle bus, box truck, ambulance, or cargo van.
- Armored locking door covers the entire fuel filler area on your E-350
- Works with cutaways, cargo vans, shuttle buses, ambulances, and box bodies
- Bolt-on install in 8–15 minutes — no drilling, no cutting, no modifications
- Protects against theft, siphoning, contamination, and vandalism
- High-strength UV-stable composite — built for fleet duty cycles
- Limited Lifetime Warranty and 30-day money-back guarantee
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.
E-350 Operators Who Need This
Shuttle Services
Airport and hotel shuttles park in open lots overnight. Lock the fuel and stop overnight siphoning.
Churches & Non-Profits
Church vans sit in open parking lots all week. Protect the fuel without spending a fortune on security.
Delivery & Logistics
E-350 box trucks make dozens of stops daily. The Fuel Vault locks the fuel between every delivery.
Rental Fleets
Rental E-350s go everywhere with different drivers. Standardize fuel security across every unit.
Medical Transport
E-350 ambulances and patient transport vehicles need reliable, protected fuel access at all times.
Contractor Vans
E-350 cargo vans carry expensive tools and supplies. Lock the fuel cap the same way you lock the doors.
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 |
| E-350 Specific Fit | Generic universal fit | Purpose-built for Ford E-350 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
E-350 Specific Fit
Generic universal fit
Purpose-built for Ford E-350 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
Does the Fuel Vault fit the Ford E-350?
Yes. The Work Truck Fuel Vault fits the Ford E-350 platform including cutaway, stripped chassis, and cargo van configurations.
Will it fit my E-350 shuttle bus?
Yes. The Fuel Vault mounts to the E-350 chassis at the fuel filler area. It works with shuttle buses, box bodies, ambulances, and every other E-350 upfit.
Why is the E-350 fuel cap exposed?
Ford sells the E-350 cutaway as an incomplete vehicle. The body builder finishes the build, but nobody addresses the exposed fuel cap. It's a factory gap that has existed for decades.
Can I install it myself?
8 to 15 minutes with basic hand tools. No drilling, cutting, or body modifications needed.
Does it work with both gas and diesel E-350s?
Yes. The Fuel Vault protects the fuel filler area regardless of fuel type. It works on both gas and diesel E-350 models.
How much does it cost?
Founders Edition pricing starts at $139.95 with free shipping. Volume discounts available for fleets.
Is there a warranty?
Yes — Limited Lifetime Warranty and a 30-day money-back guarantee.
Lock the Fuel on Your E-350 — Starting at $139.95
Your E-350 parks in public. The fuel cap shouldn't be public too. Bolt-on, no drilling, done in minutes.
Secure checkout • Free US shipping • No charge until your order ships