transfer flow|SKU:0800117471-var-53060-141d72

Transfer Flow 40-Gallon Under-Toolbox DOT-Legal Refueling Tank

DOT-Legal 40-Gallon Under-Toolbox Fuel Transfer Tank

DOT-legal fuel storage — Store gas, diesel, or kerosene legally
12-gauge ReliaSteel build — U.S. aluminized steel for superior durability
12V GPI pump included — 12 feet of hose for field refueling
Fits short and long beds — Mounts under over-the-rail toolboxes
  • FREE Compliance Documentation -- DOT legality docs and manufacturer specs included with every order
  • FREE Freight -- LTL delivery to your site — ships free
  • FREE Pre-offer Spec Review -- We verify fitment, fuel type, and local requirements before you order

$2,304.00

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In the box

  • 40-gallon ReliaSteel transfer tank
  • 12V GPI fuel pump
  • 12 feet of discharge hose
  • Complete installation hardware
Transfer Flow Under Toolbox Transfer Tank 0800117471
Transfer Flow 40-Gallon Under-Toolbox DOT-Legal Refueling Tank
$2,304.00

DOT-Legal 40-Gallon Under-Toolbox Fuel Transfer Tank

This heavy-gauge Transfer Flow refueling tank is spec'd for fleet operations that need secure, code-compliant fuel storage under over-the-rail toolboxes. Built-to-spec from 12-gauge ReliaSteel U.S. aluminized steel and powder coated black for a durable satin finish, it holds 40 gallons of gas, diesel, or kerosene. The included 12V GPI fuel pump with 12 feet of hose gets your crew refueled fast. All installation hardware is included.

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DOT Legal Fuel Storage
12V GPI Fuel Pump
12-Gauge ReliaSteel
Complete Install Hardware
40 Gallon
Fuel Capacity
12 Feet
Hose Length
12-Gauge
Steel Thickness
Spec'd Correctly Before It Ships

Spec'd Correctly Before It Ships

The vendor who ships the wrong tank configuration costs you weeks of downtime. That's why Tank Vault verifies your application, fuel type, and jurisdiction requirements before your order leaves our system. This Transfer Flow 40-gallon under-toolbox tank is DOT legal for gas, diesel, and kerosene storage — but we confirm it matches your specific use case before processing. No guessing whether the tank fits your bed length, pump compatibility, or fuel type. We catch what generalist suppliers miss, so your tank arrives ready to install without returns, freight claims, or wasted time on the job site.

12-Gauge Steel Built to Handle Real Work

12-Gauge Steel Built to Handle Real Work

This 40-gallon refueling tank is constructed from 12-gauge ReliaSteel, a high-yield U.S. aluminized steel engineered for superior durability under real-world conditions. The powder-coated black satin finish resists corrosion, chipping, and weather exposure that degrades lesser tanks on job sites. At 49 inches long by 27 inches wide and 12.25 inches high, the dimensions are spec'd to fit securely beneath over-the-rail toolboxes on both short and long bed trucks without sacrificing bed space or structural integrity. This is industrial-grade fuel storage built for daily fleet use, not occasional weekend hauling.

Complete Pump System Ready to Fuel

Complete Pump System Ready to Fuel

Every Transfer Flow under-toolbox tank ships with a 12-volt GPI fuel pump and 12 feet of hose, giving you a field-proven refueling setup out of the box. All necessary installation hardware is included — no separate parts runs or compatibility guesswork. The 12V pump operates off your truck's electrical system, delivering reliable fuel transfer for gas, diesel, or kerosene. For fleet managers running multiple vehicles from a single truck, this setup eliminates trips to the fuel station and keeps your crew on the job site where they produce revenue.

Compatibility

Designed to fit underneath over-the-bed-rail toolboxes on pickup trucks.

  • Over-the-rail toolbox installed on truck bed
  • Short bed or long bed pickup truck
  • Minimum 49 inches of bed length available

Applications

Built for operations that refuel on-site without a commercial pump station.

Fleet fueling at remote yards
Construction site refueling
Agricultural equipment topping

Full specifications

At a glance

Dimensions
27 inches
Surface
Powder coated black
Full specifications10 data points across 4 categories

Dimensions

Capacity40 Gallon
Length49 inches
Width27 inches
Height12.25 inches

Power & Performance

Transfer Pump12V GPI Fuel Pump
Hose Length12 feet

Materials

Construction12-gauge ReliaSteel, high-yield U.S. aluminized steel
FinishPowder coated black

Compliance & Warranty

DOT LegalGas, diesel, or kerosene
InstallationComplete with all parts needed for installation

The Tank Vault Promise

Every tank we sell is vetted, documented, and backed by real support.

Free Compliance DocumentationDOT and manufacturer documentation included with your order — no chasing the vendor afterward.
Free ShippingLTL freight delivery to your site arranged at no extra cost.
30-Day GuaranteeUninstalled, original packaging — if it doesn't meet your spec sheet or arrives damaged, we resolve it immediately.
★★★★★
“Spec'd it with Tank Vault before ordering. Tank fit perfectly under my Knapheid toolbox on a long bed Silverado. Pump fires right up and the 12 feet of hose reaches both sides of the truck. DOT documentation was in the box when it arrived — no chasing paperwork.”
F
First L.Fort Worth, TX

The Transfer Flow Under Tool Box steel Transfer Tank with fuel pump is designed to fit underneath over the bed rail toolboxes on both short bed and long bed trucks.

The under toolbox tank holds 40 gallons of fuel and is DOT legal for storing gas, diesel or kerosene. 

The tank includes a 12 volt GPI fuel pump with 12 feet of hose.

The 40 gallon refueling tank is made from 12-gauge ReliaSteel, high-yield U.S. aluminized steel for superior durability and strength; and powder coated black for durable satin finish. 

As with all Transfer Flow fuel tank systems, this refueling tank comes complete with all parts needed for installation.

Size:

  • 40 Gallon – 49 inches long x 27 inches wide x 12.25 inches high.

Fits:

  • 40 Gallon – Short bed and long bed trucks.

Transfer Pump:

  • 12V GPI Fuel Pump 8 gpm with 12 foot hose.

40 Gallon Under Toolbox Transfer Tank

Transfer Flow Under Toolbox Transfer Tank 40 gallon side view
40 Gallon: 49″L x 27″W x 12″H / fuel pump adds 5.5 inches to length

FEATURES

  • Comes with 12-volt GPI fuel pump, 12 ft. hose, nozzle, fuel cap, wiring harness with cab-mounted power switch, and mounting hardware.
  • DOT legal for gasoline, diesel, and kerosene.
  • Built from 12 & 14 gauge high-yield U.S. aluminized steel, for superior durability and strength.
  • Powder coated black for durable satin finish.
  • Easy-to-use hose-purge feature eliminates messes.
  • Pumps up to 8 gallons per minute.
  • Baffled to prevent fuel sloshing.
  • 6 year, unlimited mile warranty.
  • Made in the USA.

Other Transfer Tank Options:

  • Transfer Flow Transfer Tank
  • Under Toolbox Fuel Tanks

Additional information

Size

40 Gallon
Transfer Pump

12V GPI Fuel Pump

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Frequently Asked Questions

Yes. This Transfer Flow under-toolbox tank is DOT legal for storing gasoline, diesel, and kerosene. The 40-gallon capacity and 12-gauge ReliaSteel construction meet DOT transport and storage requirements. However, always verify your specific state and local regulations before installation, as some jurisdictions impose additional requirements. Tank Vault includes compliance documentation with every order and offers a free pre-offer spec review to confirm this tank meets your local code.
This tank is designed to fit beneath over-the-bed-rail toolboxes on both short bed and long bed trucks. Dimensions are 49 inches long by 27 inches wide by 12.25 inches high. Verify your toolbox's internal available and bed rail height before ordering. If you need help confirming fitment with your specific truck and toolbox combination, contact Tank Vault before purchasing — we will walk through the measurements with you.
Every tank ships with a 12-volt GPI fuel pump and 12 feet of hose. The pump operates off your truck's 12V electrical system, and all necessary installation hardware is included in the box. GPI is a recognized name in fuel transfer equipment, and this pump is matched to the tank's specifications for reliable, consistent fuel delivery in the field.
Lead times vary by inventory and your location. Tank Vault arranges LTL freight delivery nationwide to your job site, shop, or residence. For specific delivery timelines — especially if you have a deadline before winter freeze or a project start date — contact us before ordering. We coordinate directly with freight carriers and will give you an honest delivery window rather than a guess.
This is a 40-gallon DOT-legal transfer tank designed for mobile refueling from a truck bed, not a stationary aboveground storage tank installation. EPA SPCC secondary containment requirements typically apply to fixed AST installations above certain capacity thresholds. For mobile transfer tanks, requirements differ by state. Contact Tank Vault for a free pre-offer review — we will confirm whether your specific application and jurisdiction require additional containment.
Same product, same manufacturer — but Tank Vault adds pre-offer compliance verification, fitment review for your specific truck and toolbox, and LTL freight coordination to your door. If you order direct and the tank doesn't fit or doesn't meet your local code, you're on your own. We catch those issues before the tank ships, saving you return freight costs and weeks of downtime.
SKU: 0800117471 Categories: , Brand:

The Tank Vault Promise

Every tank we sell is vetted, documented, and backed by real support.

Free Compliance Documentation DOT and manufacturer documentation included with your order — no chasing the vendor afterward.
Free Shipping LTL freight delivery to your site arranged at no extra cost.
30-Day Guarantee Uninstalled, original packaging — if it doesn't meet your spec sheet or arrives damaged, we resolve it immediately.

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About transfer flow Fuel Transfer Tanks

transfer flow is a trusted manufacturer of premium fuel transfer tanks. TankVault is an authorized dealer offering the full transfer flow lineup with free delivery, price match guarantee, and expert support.

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