Our 40-gallon Auxiliary Fuel Tank System is the Most Universally Compatible Fuel Tank Available!

Our 40-gallon in-bed auxiliary fuel tank fits 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. You'll be pleased that its low height means it can fit under most standard tonneau bed covers. The auxiliary system is computer-controlled by our 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
• 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
• Fits under most tonneau covers
• Works with 5th wheel prep packages
• Made in the USA from American-made steel

Notes:

• 2010-12 Ram Mega Cab and Crew Cab short bed pickup with single rear wheels require a filler neck (part no. 0500115461).
• 2013-24 Ram Mega Cab and Crew Cab short bed pickups require a mounting bracket kit (part no. 0200116790).