TRAX 4 Mobile App
Want to know the status of your on-board fuel systems? Simply download the TRAX 4™ app to your smartphone and enter your vehicle and fuel system information. In no time, you’ll be able to monitor your pickup’s fuel capacity! During fuel transfer, the message “PUMP ON” will be displayed. With the TRAX 4™ app, you'll be able to monitor:
- Fuel levels shown in your main and auxiliary tanks
- Gallons or percentage of fuel shown in each fuel tank
- Fuel system operating status, including when fuel is being transferred
- Your Distance to Empty in miles
Popular Optional Items:

Fuel Level Monitor LCD
If you prefer not to use our TRAX 4™ app with your auxiliary tank but still want to know how much fuel you have, Transfer Flow offers an in-cab fuel level monitor LCD. The LCD shows the fuel level of the auxiliary tank with an easy-to-read bar graph that decreases when fuel is transferred to the pickup’s main fuel tank. This item is optional and is sold separately.
ProTech® Cross Body Tool Box
Enhance your pickup's functionality by pairing a 40-gallon auxiliary fuel tank with a ProTech Cross Body Tool Box. The tool box is designed to sit on the bed rails, while the 40-gallon fuel tank fits neatly underneath. The tool box features a sliding tray and dividers for organization, along with durable stainless steel hinges that can withstand repeated opening, closing, twisting, and shaking. Both the Transfer Flow fuel tanks and ProTech tool boxes are proudly made in the USA. When combined, they create a winning solution for your needs! Please note that this item is optional and sold separately.
Transfer Flow 40 Gallon In-Bed Under Tool Box Auxiliary Diesel Fuel Tank System
Maximize Efficiency with the 40-Gallon In-Bed Auxiliary Fuel Tank and ProTech® Tool Box.
Combine our 40-gallon in-bed auxiliary fuel tank with a ProTech® Tool Box for the ultimate truck bed solution. Its sleek, low-profile design fits under most over-the-rail toolboxes, including ProTech® models, and tucks neatly beneath most tonneau covers for a clean, integrated look. Constructed from high-yield 12-gauge U.S. aluminized steel with a durable satin black powder-coated finish, this tank delivers exceptional strength, corrosion resistance, and long-lasting performance.
Powered by our patented TRAX 4™ Operating System, this system provides computer-controlled automatic fuel transfers that are safer, more reliable, and more convenient than traditional gravity-fed systems. TRAX 4™ continuously monitors both the vehicle's main fuel tank and the auxiliary tank, automatically transferring fuel at predetermined levels while the vehicle is in operation. For added convenience, the TRAX 4™ mobile app enables real-time monitoring of both tanks directly from your smartphone, giving you complete visibility and control wherever the road takes you.
Why You’ll Love It:
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Low-profile design fits under most over-the-rail toolboxes and bed covers
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Compatible with most tonneau covers
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Robot-welded seams for exceptional strength and durability
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Complete installation kit included
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TRAX 4™ automatic fuel transfers for hassle-free operation
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Real-time fuel monitoring through the TRAX 4™ mobile app
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Built from 12- and 14-gauge high-yield U.S. aluminized steel
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Durable satin black powder-coated finish
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Internal baffles help reduce fuel sloshing
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Optional Under Toolbox Refueling Tank Conversion Kit (Part #0200117482) available
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6-year unlimited-mile warranty
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Proudly made in the USA from American-made steel.
Optional Upgrade: Under Toolbox Refueling Tank Conversion Kit
For customers looking to maximize versatility, the Under Toolbox Refueling Tank Conversion Kit (Part #0200117482) is available as an optional upgrade. The refueling conversion kit allows you to maintain the benefits of automatic fuel transfers to your vehicle’s main tank while adding the capability to refuel equipment directly from the auxiliary tank. It’s the perfect solution for contractors, farmers, fleet operators, and anyone who wants an extended driving range and convenient equipment fueling from a single tank system.
Note: A cover plate (Part No. 0400117477) is required if the fuel tank is installed without a toolbox.
| Option | Unit | Purchase | |
|---|---|---|---|
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40 Gallon In-Bed Under Tool Box Auxiliary Fuel Tank System - TRAX 4
0800117470|Warehouse4
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$2,601.00/EA
|
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40 Gallon In-Bed Under Tool Box Auxiliary Fuel Tank System - TRAX 4
0800117470|Warehouse1
|
$2,601.00/EA
|
||
|
0800117470
|
$2,601.00/EA
|