
PROFESSIONAL TRUCK STORAGE
Built to Hold, Built to Last
Auxiliary fuel tanks, transfer tanks & truck toolboxes — engineered for professionals
Free Delivery · Commercial Grade
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What Trade Pros Keep Reordering
Top-Rated Industrial Fuel & Liquid Storage Tanks — the most trusted choices nationwide.

Newberry UL 142 Double Wall Skid Tank (Large)
“Your tools are your livelihood. They deserve a box that works as hard as you do.”
— THE TANK VAULT PHILOSOPHY
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New Arrivals — Storage Solutions — the latest products just landed.
For Fleets & Contractors
Contractors, municipalities, and fleet managers get volume pricing, Net-30 terms, and dedicated account support.
Apply for Fleet AccountWHY TANK VAULT
The Professional’s Choice
Authorized Dealer
Full manufacturer warranty. Genuine aluminum — not imported knockoffs.
Price Match Guarantee
We match any authorized dealer on toolboxes, tanks, and storage.
Truck Storage Experts
Our team has spec'd storage for fleet managers and individual contractors.
Free Freight Delivery
All toolboxes and tanks ship free on LTL freight to your door.
4,000+ Trucks Equipped
From single contractors to full fleets — delivered and rated 5 stars.
TOOLBOX GUIDES
Toolbox Buying Guides & Tips
Underbody vs Top Mount Toolboxes
Which style is right for your work truck? Pros, cons, and use cases explained.
Read More →Best Truck Toolboxes for Contractors
Top picks for electricians, plumbers, and general contractors.
Read More →How to Measure for a Truck Toolbox
Get the perfect fit every time with our step-by-step measurement guide.
Read More →Frequently Asked Questions
What capacity fuel tank do I need?
Calculate daily fuel usage × number of refuel days between resupply. A typical contractor crew truck burning 30 gallons/day and refueling every 3 days needs a 90+ gallon auxiliary. We carry models from 25 to 100 gallons for in-bed mounting, and up to 500 gallons for stationary installations.
Are your tanks CARB compliant?
All transfer tanks and auxiliary fuel systems we carry are EPA/CARB compliant where required. Product pages include compliance certifications. If you're in a strict-emission state, our team will confirm compatibility before you order.
What mounting hardware is included?
Most in-bed auxiliary tanks include mounting brackets, L-track hardware, and installation hardware for full-size pickup trucks. Specific truck fitment (F-250, Ram 2500, Silverado HD, etc.) is listed per model. Contact us for custom-bed mounting needs.
Do your tanks include a pump?
Some combo units include a 12V transfer pump. Standalone tanks require a separate pump — we carry AC, DC, and hand pumps to match your flow rate and fuel type. Our specialists will match pump to tank to application.
Are the tanks certified for diesel and gasoline?
Our aluminum auxiliary tanks are rated for diesel, gasoline, and aviation fuel. Chemical compatibility for DEF or other fluids varies by model — always check the product spec sheet. Poly tanks are available for chemical-resistant applications.
What warranty is included?
All tanks carry a manufacturer warranty from 1 to 5 years covering defects in material and welds. Transfer pumps carry a 1-year warranty. Our US team handles all warranty support and replacement parts.

Fuel & Transfer Tanks Engineered for the Jobsite
Every auxiliary fuel tank, transfer tank and pumping system we carry is spec'd for professionals who keep equipment running — aircraft-grade aluminum construction, CARB-compliant designs, digital flow meters, and pumps rated for harsh outdoor conditions. We ship direct from US warehouses and our specialists will match the right tank capacity and mounting system to your application.
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