Someone's Stealing Diesel from Your Scelzi Truck.
$500–$1,000 per incident • Exposed fuel cap • No factory protection
Scelzi builds some of the toughest service bodies in the industry. But the Ford or Ram chassis has a wide-open fuel cap. Thieves know this. The Work Truck Fuel Vault stops diesel theft on Scelzi-equipped work trucks with one bolt-on install.
Founders Edition pricing — starting at $139.95 (Save up to $60)
Why Thieves Target Scelzi Trucks
Scelzi trucks are high-value targets: full diesel tanks, expensive tools and equipment, and a completely exposed fuel cap.
- Ford and Ram ship chassis cabs with zero fuel cap security
- Scelzi body locks protect tools — the fuel cap is wide open
- California is a hotspot for organized work truck fuel theft
- Siphoning takes minutes — no noise, no forced entry
- Locking gas caps are defeated in seconds with pliers
- Fuel contamination from tampering destroys injectors ($3,000–$8,000)
Stop Fuel Theft on Your Scelzi Truck
The Work Truck Fuel Vault makes siphoning physically impossible. One bolt-on install, lifetime protection.
- Armored locking door covers the entire fuel filler area
- Tamper-resistant torx fasteners — no quick-remove
- Compatible with all Scelzi body models
- Bolt-on in 8–15 minutes — no drilling or body mods
- Purpose-built for Ford F-350–F-600, E-Series, F53 and Ram 3500–5500
- Pays for itself after preventing one theft
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.
Where Scelzi Trucks Get Hit the Hardest
Active Jobsites
Scelzi Contractor bodies parked at open construction sites overnight. Fuel vanishes by morning.
Open Yards
City Scelzi trucks in unfenced lots. Easy targets for organized fuel theft.
Remote Sites
Scelzi Welder bodies at pipeline and infrastructure sites. No cameras, no guards.
Fleet Lots
Scelzi fleet trucks parked together. One exposed cap makes the whole fleet vulnerable.
Dealer Lots
New Scelzi upfits with full demo tanks sitting on open lots.
Overnight Parking
Any overnight parking without fuel cap protection is a theft waiting to happen.
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 | High — armored composite, torx fasteners |
| Prevents Siphoning | Partial | Yes — sealed door blocks all access |
| Prevents Contamination | No | Yes — sealed against water and debris |
| Scelzi Compatible | Generic fit | Purpose-built for 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
High — armored composite, torx fasteners
Prevents Siphoning
Partial
Yes — sealed door blocks all access
Prevents Contamination
No
Yes — sealed against water and debris
Scelzi Compatible
Generic fit
Purpose-built for 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
Why are Scelzi trucks targeted for fuel theft?
Scelzi-equipped trucks are high-value targets — full diesel tanks, expensive tools, and a completely unprotected fuel cap on the OEM chassis.
Does the Fuel Vault stop siphoning on Scelzi trucks?
Yes. The armored locking door covers the entire fuel filler area, making it physically impossible to insert a siphon hose.
Will it fit any Scelzi body model?
Yes. The Fuel Vault mounts to the Ford or Ram chassis. Service, Welder, Contractor, Flatbed, Stake, Combo — all compatible.
How much does fuel theft cost per incident?
A typical siphoning costs $500–$1,000+ in stolen diesel plus downtime and contamination risk.
Can I install it myself?
Yes. Bolt-on in 8–15 minutes. No drilling or body modifications.
How much does it cost?
Founders Edition starts at $139.95 with free shipping.
Is there a warranty?
Yes — Limited Lifetime Warranty and 30-day money-back guarantee.
Protect Your Scelzi Truck's Diesel — Order Now
One siphoning event costs more than the Fuel Vault. Stop fuel theft today.
Secure checkout • Free US shipping • No charge until your order ships
Related Pages
Fuel Door Lock
Locking fuel door with tamper-resistant hardware.
Learn MoreOnly Locking Fuel Door
The only purpose-built locking fuel door.
Learn MoreLocking Cap vs Fuel Door
Side-by-side comparison of two fuel security options.
Learn MoreBest Fuel Cap Cover 2026
The #1 rated fuel cap cover for work trucks.
Learn More