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TransferFlow 37 Gallon In-Bed Auxiliary Fuel Tank System - TRAX 3 | TFL0800116180 | Multi-Vehicle Fitment

Fuel Type: Diesel
Dimensions: 53"L x 21"W x 17.88"H
Fits: 1999—2018 Ram, 1999—2019 Ford, 2001—19 GM/Chevy
Pricing: $1,599.91



We've designed an aftermarket fuel tank specifically to fit under Pace-Edwards and Truck Covers USA retractable canister bed covers. Our 37-gallon L-shaped in-bed auxiliary tank will extend your driving range and provide a gallon amount you can feel comfortable filling as fuel prices fluctuate. The auxiliary system is computer-controlled by our patented TRAX 3™ operating system with exclusive AutoTrans® technology, and is equipped with a NAPA-3270 (WIX 33270) fuel filter. Transfer Flow fuel tanks are built from ReliaSteel®, high-yield U.S. aluminized steel; and powder coated black for superior corrosion resistance and strength. All TRAX 3™ systems include an LCD module that displays fuel levels in both the main and auxiliary tanks. 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 3™ system will transfer fuel at predetermined fuel levels while the vehicle is in operation.


  • Recommended for drivers who have a retractable canister tonneau bed cover
  • Won't interfere with standard 5th wheel hitch
  • Fits under Pace-Edwards, Truck Cover USA, and other retractable canister bed covers
  • Robot-welded seams provide extraordinary strength, unlike rotationally molded plastic tanks or cheaper steel brands
  • Our fuel tank systems include all components needed for installation
  • TRAX 3™ computer-controlled automatic fuel transfers for worry-free operation with exclusive AutoTrans® technology
  • Built from ReliaSteel®, high-yield U.S. aluminized steel powder coated black for superior durability and strength
  • Baffled to prevent fuel sloshing
  • 6 year, unlimited mile warranty
  • Made in the USA

Product dimensions include 3" in length and 1 1/2" in width for the mounting brackets.



Shipping Information

  • Item Requires Shipping
  • 145.0 lbs.
  • $90.00