Cover Your Fuel Door — Or Lack of One
Your Chassis Cab Has No Fuel Door. The Fuel Vault Adds One.
Work trucks don't have a fuel door. The filler cap sits exposed on the side of the truck. The Work Truck Fuel Vault is the protective fuel door cover that adds security, protection, and a clean factory look.
Founders Edition pricing — starting at $139.95 (Save up to $60)
No Cover Means No Protection
Without a fuel door cover, the fuel filler on your chassis cab is exposed to theft, weather, road debris, and contamination.
- Chassis cabs ship without any fuel door or filler cover
- Exposed caps are vulnerable to theft, siphoning, and tampering
- Road debris, dirt, and water collect around the unprotected filler
- No factory option exists to add a fuel door cover after purchase
- Locking caps don't cover the filler area — just the cap opening
- Unprotected fuel fillers look unprofessional on fleet vehicles
The Fuel Door Cover You Need
The Work Truck Fuel Vault is the armored fuel door cover that protects, locks, and cleans up the fuel filler area on your work truck.
- Full coverage over the fuel filler area — cap, neck, and surroundings
- Tumbler lock with security torx — tamper-resistant locking
- UV-stable armored composite — resists impacts and weather
- Clean, OEM-quality appearance — looks like it came from the factory
- Bolt-on in 8–15 minutes — no drilling or cutting
- Made in the USA — Sarasota, Florida
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.
Who Needs a Fuel Door Cover
Contractors
Cover and lock the fuel door on every service truck in your fleet.
Fleet Managers
Professional appearance and real security — across every truck.
Government
Municipal fleet trucks need covered, locked fuel fillers.
Utility
Protect the fuel filler from road debris and tampering in the field.
Upfitters
Add a factory-quality fuel door cover during the body build.
Service Trucks
Your HVAC, plumbing, or electrical truck needs a fuel door cover.
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 fuel door cover?
A fuel door cover is a protective enclosure that mounts over the fuel filler door area. On chassis cab work trucks, there is no factory fuel door — the Fuel Vault adds one as a locking, armored cover.
How does it protect my truck?
The Fuel Vault covers the entire fuel filler area, preventing theft, siphoning, and contamination. The armored composite material resists impacts, UV, and harsh weather.
What trucks does it fit?
Ford F-550, F-600, E-350, E-450, and Ram 5500 chassis cabs with any body type.
Does it require drilling?
No. Bolt-on install in 8–15 minutes with basic hand tools.
Does it lock?
Yes. Tumbler lock with security torx fasteners.
How much does it cost?
Founders Edition starts at $139.95 with free shipping.
Is there a warranty?
Limited Lifetime Warranty and 30-day money-back guarantee.
Add a Fuel Door Cover — Starting at $139.95
Protective, locking fuel door cover for Ford and Ram chassis cabs. Bolt-on. No drilling. Lifetime warranty.
Secure checkout • Free US shipping • No charge until your order ships
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