Scelzi Built the Body. The Fuel Cap Is Still Exposed.
Service Body Locked ✓ • Equipment Secured ✓ • Diesel Unprotected ✗
Scelzi builds some of the toughest truck bodies on the West Coast. But the Ford or Ram chassis underneath ships with a completely exposed fuel cap. The Work Truck Fuel Vault is the bolt-on locking fuel door that finishes the job on your Scelzi-equipped work truck.
Founders Edition pricing — starting at $139.95 (Save up to $60)
The Vulnerability on Every Scelzi Truck
Scelzi builds bodies that can take punishment. But the chassis fuel system is the OEM's responsibility — and they left the fuel cap completely open.
- Ford and Ram chassis cabs ship with zero fuel security from the factory
- Scelzi body locks protect tools — the diesel fuel cap is chassis-level and totally exposed
- California and West Coast fleets are prime targets for organized fuel theft rings
- A single fuel siphoning event costs $500–$1,000+ per truck
- Locking gas caps are easily defeated — thieves remove them in seconds with pliers
Finish the Job Scelzi Started
The Work Truck Fuel Vault adds chassis-level fuel security to match the body-level security Scelzi already provides.
- Armored locking door covers the entire fuel filler area — cap, neck, and access
- Compatible with all Scelzi body configurations — no interference with compartments
- Bolt-on install in 8–15 minutes — no drilling, cutting, or body modifications
- Purpose-built for Ford F-350–F-600, E-Series, F53 and Ram 3500–5500
- UV-stable composite — built for California sun and year-round outdoor exposure
- 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.
Every Scelzi Truck Needs This
West Coast Contractors
Scelzi bodies on F-450s and F-550s at active jobsites. The Fuel Vault locks the one thing Scelzi can't.
California Municipalities
City and county Scelzi trucks in open yards. Lock the fuel like Scelzi locks the compartments.
Utility & Telecom
Scelzi utility bodies on Ram chassis sit overnight in open lots. Protect the diesel that keeps them running.
Scelzi Dealers & Upfitters
Add the Fuel Vault to every Scelzi upfit package. It's the security upgrade customers expect.
Fleet Managers
Standardize fuel security across all Scelzi-equipped trucks. Volume pricing makes it easy.
Remote Operations
Scelzi trucks on pipeline and construction sites need fuel protection that works around the clock.
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 — easily defeated | High — armored composite, torx fasteners |
| Covers Fuel Filler Area | No | Yes — full hatch coverage |
| Prevents Siphoning | Partial | Yes — sealed door blocks all access |
| Scelzi Compatible | Generic fit | Purpose-built for Ford & Ram chassis under Scelzi |
| 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 — easily defeated
High — armored composite, torx fasteners
Covers Fuel Filler Area
No
Yes — full hatch coverage
Prevents Siphoning
Partial
Yes — sealed door blocks all access
Scelzi Compatible
Generic fit
Purpose-built for Ford & Ram chassis under Scelzi
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 trucks with Scelzi service bodies?
Yes. The Work Truck Fuel Vault mounts to the chassis fuel filler area, not the Scelzi body. It fits any Ford F-350 through F-600, E-Series, F53, or Ram 3500 through 5500 chassis under a Scelzi body.
Will it interfere with Scelzi body compartments or doors?
No. The Fuel Vault installs at the fuel filler area near the cab. Scelzi side compartments, rear access, crane mounts, and other equipment remain completely unaffected.
Which Scelzi models work?
All of them — Service bodies, Welder bodies, Contractor bodies, Flatbeds, Stake beds, and Combo bodies. The Fuel Vault mounts to the truck chassis, not the Scelzi body.
Why is this needed if Scelzi bodies have locks?
Scelzi locks protect tools and cargo. The fuel cap on the chassis is a factory gap — Ford and Ram chassis cabs ship with exposed, unlocked fuel caps. The Fuel Vault fills that security hole.
Can I install it myself?
Yes. Basic hand tools, 8 to 15 minutes. No drilling or cutting needed.
What trucks are compatible?
Ford F-350, F-450, F-550, F-600 Chassis Cab, Ford E-350/E-450, Ford F53, and Ram 3500, 4500, 5500 Chassis Cab.
How much does it cost?
Founders Edition pricing starts at $139.95 with free shipping. Fleet and dealer volume discounts available.
Is there a warranty?
Yes — Limited Lifetime Warranty and a 30-day money-back guarantee.
Complete Your Scelzi Build — Lock the Fuel
Scelzi built the body. The Fuel Vault finishes the security.
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