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
Save $200! Use Coupon Code ROADTRIP at checkout. Expires March 30.
Get a Winning Combination When by Pairing Our 40-gallon In-bed Auxiliary Fuel Tank With a ProTech® Tool Box
The sleek, low-profile design of our new 40-gallon in-bed auxiliary fuel tank allows it to fit under most over-the-rail toolboxes, including ProTech® Tool Boxes, as well as underneath tonneau covers. This auxiliary system is controlled by our patented TRAX 4™ operating system.
Computer-controlled automatic fuel transfers mean worry-free operation, and much safer and more reliable operations than gravity-fed systems. Based on the capacity of your vehicle's main fuel tank and the capacity of the Transfer Flow fuel tank, the TRAX 4™ system will transfer fuel at predetermined fuel levels while the vehicle is in operation.
Features & Benefits
- Robot-welded seams provide extraordinary strength
- Comes complete with all components for installation
- Add refueling capabilities to your 40-gallon under-tool box auxiliary fuel tank with our optional refueling kit (part no. 020-01-17482)
- TRAX 4™ computer-controlled automatic fuel transfers for worry-free operation
- Built from 12- and 14-gauge high-yield U.S. aluminized steel, for superior durability and strength
- Baffled to prevent fuel sloshing
- 6-year, unlimited mile warranty
- Made in the USA from American-made steel
Notes:
- If you use the 5th Wheel Prep Package on your 2013-24 Ram, this tank will not fit.
- 2010-12 Ram Mega Cab short bed pickup with single rear wheels require a filler neck (part no. 0500115461)
- Cover plate required if not using fuel tank with a tool box (part no. 0700117477)
Option | Unit | Purchase | |
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40 Gallon In-Bed Under Tool Box Auxiliary Fuel Tank System - TRAX 4
0800117470|Warehouse1
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$2,349.73/EA
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0800117470
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$2,349.73/EA
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