Double Your Driving Distance When You Install a 50-gallon Auxiliary Fuel Tank System! The Transfer Flow 50 Gallon In-Bed Auxiliary Fuel Tank System is a top-of-the-line low-profile auxiliary fuel tank that is designed to fit most full-size trucks and fit under most bed covers. This auxiliary fuel tank system gives you an additional 50 gallons of fuel capacity that automatically transfers into your primary tank via the Transfer Flow 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 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). Does not fit on 2013-24 Ram short bed with 5th Wheel Prep Package.