the fuelbox|SKU:LT60T-MS-var-57324-0cec3e

Fuelbox 55-Gallon Under Tonneau L-Shaped Auxiliary Fuel Transfer Tank

Maximize Your Bed Space with a Vetted L-Shaped Tank

55-gallon capacity — Extends range between fuel stops
Dual-use design — Works as auxiliary or transfer tank
Marine-grade aluminum — .125 thick build built to last
DOT and EPA compliant — Legal in all 50 states for diesel
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$2,073.75

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In the box

  • Locking Gas Cap
  • Side bed step
  • Fuelbox Auxiliary Fuel Tank
The Fuelbox Under Tonneau L Shaped Auxiliary Fuel Transfer Tank
Fuelbox 55-Gallon Under Tonneau L-Shaped Auxiliary Fuel Transfer Tank
$2,073.75

Maximize Your Bed Space with a Vetted L-Shaped Tank

This 55-gallon Fuelbox L-shaped auxiliary fuel transfer tank is designed specifically for short-bed trucks running a canister-style tonneau cover. As a curated addition to your fleet, it provides the flexibility to function as an auxiliary tank using the Auto Fuel Controller or as a transfer tank with an optional pump. Constructed from .125 marine-grade aluminum with a charcoal spray liner inside and out, this tank is built tough for real-world demands. Every unit we carry is vetted for quality, ensuring your investment meets DOT and EPA standards while keeping your operations moving efficiently. Ships free.

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55 Gallon Capacity
DOT & EPA Compliant
Dual-Use Versatility
Diesel Fuel Only
55 gal
Total Fuel Capacity
53"
Tank Length
.125"
Marine Grade Aluminum
Weld Integrity That Eliminates Compliance Risk

Weld Integrity That Eliminates Compliance Risk

The most common point of failure in aftermarket fuel tanks is the weld seam. A single weak joint can mean fuel leaks, EPA violations, and costly downtime. Fuelbox addresses this with 90-degree flange reinforced seams that double the weld joint thickness for significantly stronger connections. Every tank is pressure tested underwater before leaving the factory, so weld quality is verified — not assumed. Combined with .125 marine-grade aluminum construction and a minimum of two interior baffles, this tank reflects craftsmanship that meets or exceeds DOT and EPA regulations. Legal in all 50 states for diesel fuel, it protects your operation from the fines and disruptions that come with non-compliant storage.

Flexible Fuel Management For Your Fleet

Flexible Fuel Management For Your Fleet

This Fuelbox tank adapts to how you actually work. Use it as an auxiliary fuel tank paired with the Auto Fuel Controller system, which transfers fuel to your truck's factory tank as you drive — extending your range without stopping. Or configure it as a dedicated transfer tank with an optional 2-inch bung and external pump to fuel other equipment on-site. Two controller options are available: a Plug & Play Controller that connects directly to your OBD-II port and displays fuel levels in both tanks, or a vehicle-specific Digital Display Controller programmed for your year and make. The charcoal spray liner on both the interior and exterior adds corrosion resistance for long-term durability.

Engineered Fit For Short-Bed Work Trucks

Engineered Fit For Short-Bed Work Trucks

At 53 inches long, 23.6 inches wide, and 18.5 inches high, this 55-gallon L-shaped tank is purpose-built for Ford and GM short-bed 6.5-foot trucks running a canister-style tonneau cover. The L-shape profile maximizes bed space while maintaining full fuel capacity, so you keep your tonneau functional without sacrificing storage. Every dimension is accounted for to ensure a clean installation that doesn't interfere with bed rails or cover operation. Tank Vault curated this model specifically for fleet managers who need additional fuel capacity without upfitting to a long-bed platform. It ships free and is backed by a 30-day hassle-free return policy so you verify fit with confidence.

Compatibility Guide

Verify your truck setup meets these requirements before ordering.

  • Truck bed is a Ford or GM short bed (6.5ft) or long bed
  • Equipped with a canister style tonneau cover
  • Available bed space of at least 53 inches long by 23.6 inches wide

Flexible Fueling Options

Configure this tank to match your daily operational needs.

Extended Range Auxiliary
Equipment Transfer Pump
OBD-II Plug & Play Monitoring

Full specifications

At a glance

Dimensions
23.6 inches
Full specifications10 data points across 4 categories

Dimensions

Capacity55 Gallon
Length53 inches
Width23.6 inches
Height18.5 inches

Power & Performance

Fuel TypeDiesel fuel only
OperationAuto Fuel Controller compatible or external transfer pump (optional)

Materials

ConstructionHigh quality .125 marine grade aluminum
LinerCharcoal spray liner on the inside and outside

Compliance & Warranty

RegulationsMeets or exceeds all DOT & EPA regulations
Legal StatusLegal in all 50 states for diesel fuel only

The Tank Vault Promise

We stand behind every product we sell because your fleet depends on it.

Compliance-Ready GuaranteeEvery tank is vetted to meet or exceed DOT and EPA regulations, keeping your operations legal and safe.
Ships Free, AlwaysNo minimums, no thresholds. This tank ships completely free to your door.
30-Day Hassle-Free ReturnsIf it does not fit your fleet, send it back within 30 days for a straightforward return.
★★★★★
“I run three diesel trucks and installed this Fuelbox tank on our short-bed GM with a canister tonneau cover. The L-shape tucks in perfectly — cover still works like it should. Went with the Plug & Play controller and it reads both tanks through the OBD port. No wire splicing, no guesswork. We have put about 4,000 miles on it so far and zero issues. The weld quality is noticeably better than the previous tank we replaced after a seam failure. Tank Vault had the right specs listed upfront so I knew it would fit before I ordered.”
F
First L.Dallas, TX

The Fuelbox Under Tonneau aluminum L-Shaped Auxiliary Fuel Transfer Tank is designed to fit short bed trucks with a canister style tonneau cover. 

Choose whether you want to use this fuel tank as a transfer tank or an auxiliary fuel tank.  The tank offers 55 gallons of fuel capacity.

*All Fuelbox tanks come standard with the charcoal spray liner on the inside and outside of the tank.

The Fuelbox Auxiliary Fuel Transfer Tank can be used in two ways:

  • As an auxiliary fuel tank for your diesel pickup. Use the Auto Fuel Controller to transfer fuel to your pickup as you drive.
  • Use the optional transfer pump to transfer fuel from the Fuelbox to other vehicles and equipment.  

Available Sizes:

  • 55 gallon: 53 inches long x 23.6 inches wide x 18.5 inches high.

Vehicle Fit:

  • 55 gallon: Fits Ford & GM short bed (6.5ft) and long bed trucks.

LT60T-S Under Tonneau L Shaped Auxiliary Fuel Transfer Tank

55 Gallon: 53″L x 23.6″W x 18.5″H

Features:

  • Fuel tank is constructed of high quality .125 marine grade aluminum and has a minimum of two interior baffles.
  • Fuel tank has 90 degree flange reinforced seems which doubles weld joint thickness for stronger welds.
  • Pressure tested under water for weld quality control.
  • Compatible with the Auto Fuel Controller systems for use as an auxiliary tank.
  • Add a 2 inch bung for use with an external transfer pump as a transfer tank.
  • Legal in all 50 states for diesel fuel only.
  • Meets or exceeds all DOT & EPA regulations.

Choose a Transfer Pump or the Auto Fuel Controller

Option 1: Use your Fuelbox as an Auxiliary Tank

Fuelbox Auto Fuel Controller (AFC) – Auxiliary Fuel System:

The AFC computer works in conjunction with the Fuelbox tank by automatically filling your main fuel tank when it gets low as you drive and shuts off when the main tank gets near full. The AFC monitors the stock OEM fuel tank.

When the stock tank gets near 1⁄4 of a tank it will turn on a transfer pump and transfer fuel from the auxiliary tank to the stock tank. The AFC will shut off the transfer pump when the stock tank is near full or the auxiliary tank is empty.

The AFC can be set for automatic operation or it can be manually turned off
from the cab of your truck. In addition there is a manual button, where you can manually transfer fuel for up to 4 minutes.

The Auto Fuel Controller (AFC) makes the Fuelbox tanks legal in all 50 states for diesel pickups. The AFC system meets or exceeds all DOT & EPA regulations. It also meets the standards required by the VESC-22.

Auto Fuel Controllers (AFC) systems are compatible for all Ford, GM and Dodge diesel pickups.

The Auto Fuel Controller is available in two models: Digital Display Controller or Plug & Play Controller.

  • Plug & Play Controller: plugs directly into your on-board diagnostic (OBD-II) port on your truck. This makes an easier install and avoids the factory wire harness. The plug and play shows the fuel level percentage in both the vehicle tank and the Fuelbox tank.
  • Digital Display Controller: is a vehicle specific controller that is programmed for the year and make of the vehicle. The Digital Display controller only shows the fuel level in the Fuelbox tank.

Option 2: Use your Fuelbox as a Transfer Tank with a Fuel Pump

The fuel transfer pump allows you to fill other vehicles and equipment. The transfer pump is a 13 gallon per minute pump with a 12 foot hose and an auto shut-off nozzle. 

Transfer Pump Accessories:

  • Filter Kit – Adds filtration to your transfer pump.
  • Fuel Meter – Logs how many gallons you transfer with the transfer pump.

Fuelbox Optional Accessories

  • Locking Gas Cap
  • Side bed step

Additional Options:

  • Fuelbox Auxiliary Fuel Tanks.
  • All L Shape Auxiliary Fuel Tank options.

    Additional information

    Size

    55 Gallon

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    Frequently Asked Questions

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    SKU: LT60T-MS Categories: , Brand:

    The Tank Vault Promise

    We stand behind every product we sell because your fleet depends on it.

    Compliance-Ready Guarantee Every tank is vetted to meet or exceed DOT and EPA regulations, keeping your operations legal and safe.
    Ships Free, Always No minimums, no thresholds. This tank ships completely free to your door.
    30-Day Hassle-Free Returns If it does not fit your fleet, send it back within 30 days for a straightforward return.

    Related products

    About the fuelbox Fuel Transfer Tanks

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

    View all the fuelbox products →

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