Truck Accessories > Fuel Tanks > Transfer Flow In-Bed Auxiliary Fuel Tanks
Increase your Ford, GM or Dodge Ram diesel pickup’s fuel capacity and driving range with an in-bed auxiliary fuel tank systems from Transfer Flow! Transfer Flow in-bed auxiliary tanks are available in 37, 50, 75, 98 and 100 gallons, and are available in sturdy aluminized steel and bright diamond plate. Transfer Flow fuel tanks are fully baffled to minimize fuel sloshing and come complete with all necessary installation components and detailed instructions (some pickups require a fillneck kit or tee). Using the patented technology of our TRAX 4™ operating system, the transfer process is entirely automatic and 100% worry free! Exclusive design features allow some tanks to be used in conjunction with other popular cargo accessories such as retractable truck bed covers and tonneau covers. Let us “fuel your adventures” with a safe, legal and durable in-bed auxiliary fuel tank system from Transfer Flow!
Fits Most Trucks Including 1/2 Ton Trucks
Finally, an almost universal auxiliary fuel tank. Our 40-gallon in-bed auxiliary fuel tank system is designed to be compatible with almost any diesel truck, including half-ton pickups, trucks with utility beds, RamBox equipped trucks, or those with a factory installed 5th wheel prep package or other 5th wheel hitch. The patented fuel tank design has a recessed cover box where the sending unit, rollover valve, and fuel filter come preassembled. You’ll be pleased that its low height means it can fit under most standard tonneau bed covers.
Fits Most Full-Size Trucks with Over-the-Rail Tool Boxes
Designed to fit under most over-the-rail toolboxes, this 40-gallon in-bed auxiliary fuel tank system is built for diesel truck owners who want extra range without sacrificing bed space. Compatible with many short and long bed pickups from Ford, GM, and Ram. Pre-assembled and includes the TRAX 4® auto fuel transfer system.
Surprisingly Space Saving
Our 75 gallon in-bed fuel tank is just 18″ deep and delivers a significant increase in fuel capacity while maintaining maximum cargo space. The tank fits short and long bed pickups. It is available in 14 gauge aluminized steel with black powder coat finish (tanks shown in photo has our optional spray-on coating).
Miami to Chicago without stopping for fuel? That’s no big deal for you when you install the impressive 100-gallon auxiliary. This tank is our biggest in-bed auxiliary fuel tank, holding up to 100 gallons of additional fuel to go the distance without needing to stop for fuel. The auxiliary system is computer-controlled by our patented TRAX 4 operating system with patented 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.