transfer flow

Transfer Flow In-Bed Auxiliary Tanks Ford/Dodge/GMC/Chevy


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NOTE: This part currently will not work with 2008 Chevrolets.

Product Details

Product Name: Transfer Flow In-Bed Auxiliary Tanks Ford/Dodge/GMC/Chevy
Manufacturer: Transfer Flow
Thoroughbred Diesel Part #: TFLINBEDAUXILIARYTANK

Transfer Flow in-bed auxiliary tanks provide a worry-free, nohassle experience with our patented TRAX 4 computer-controlled fuel management system.

Transfer Flow AutoTrans technology is specific for each vehicle and auxiliary tank model, and automatically transfers fuel from the in-bed tank to the main tank at specified fuel levels.

Each of our auxiliary fuel tanks come with our TRAX 4 system that shows fuel levels in percentages or gallons on your phone, as well as the operational status of the system. Optional in-cab LCD screen available.

Note: These will only work for Diesel and not rated for Gasoline.

Transfer Flow In-Bed Auxiliary Tank Features:

  • For drivers who want to maximize their fuel capacity and driving range
  • Robot-welded seams provide extraordinary strength
  • Comes complete with all components for installation
  • TRAX 4 computer-controlled automatic fuel transfers for worry-free operation
  • Built from ReliaSteel, high-yield U.S. aluminized steel, for superior durability and strength
  • Baffled to prevent fuel sloshing
  • 6-year, unlimited mile warranty
  • For more information on Transfer Flow call us at 1-859-737-4966 .

Note: This part currently will not work with 2008 Chevrolets.


  • Can you use auxiliary tank to fill truck tank and also use to fill equipment?

    James Paul Stewart | 3/7/2023


  • i have a 50 gal TF with trax 3. will it work with a 2020 Gmc 3500 DRW

    H Arthur Minor | 7/23/2019

    I do not show fitment on the 2020 GMC’s yet. Here is transfer flows phone: (800) 442-0056.

  • Hello I was wondering if you guys have this transfer tank for a 2008 Chevy 2500hd 6.0l with 6.5 ft box. I got on transfer flows web site and it says they do not make them . Please help. Looking for more fuel capacity then 26 gallons

    Nate Peña | 4/30/2019

    Transfer Flow does not have a replacement tank for your platform, but if you do the toolbox/fuel tank combo it will add 40 gallons to your capacity.  There are located here: