Double your driving range with the Transfer Flow 50-Gallon Auxiliary Fuel Tank System. The Transfer Flow 50-Gallon In-Bed Auxiliary Fuel Tank System is a premium, low-profile auxiliary tank designed to fit most full-size trucks and slide easily under most bed covers and tonneau covers. Constructed from high-yield 12-gauge U.S. aluminized steel, this tank delivers exceptional strength, corrosion resistance, and long-lasting durability for heavy-duty use. Providing an extra 50 gallons of fuel, this system automatically transfers fuel into your primary tank via the TRAX 4 operating system. TRAX 4 offers computer-controlled automatic fuel transfers, ensuring safer, more reliable, and worry-free operation than traditional gravity-fed systems. Fuel is transferred at predetermined levels while your truck is in motion, and the TRAX 4 mobile app lets you monitor both your main and auxiliary tanks in real time from your smartphone for maximum convenience and control. With the Transfer Flow 50-Gallon In-Bed Auxiliary Fuel Tank, you get unmatched capacity, durability, and control, keeping you on the road longer and giving you peace of mind every mile of the way.• Low height profile allows it to fit under hard or soft bed covers• Robot-welded seams for unmatched strength• Complete installation kit included• TRAX 4 automatic fuel transfers for worry-free operation• Built from 12 and 14-gauge high-yield U.S. aluminized steel for superior durability• Baffled to prevent fuel sloshing• 6-year, unlimited-mile warranty• Proudly made in the USASpecsPart Number: 0800116625Dimensions: 60-3/4"L x 18-1/2"W x 18"HShip Weight: 155 lbs. FITSDIESEL ONLY Short and Long Beds2010-2026 Dodge/Ram2011-2026 GM/Chevy2008-2026 Ford2010-2012 Ram Mega Cab and Crew CabNOTES: Short bed pickup with single rear wheels requires a filler neck (part no. 0500115461 sold separately).Does NOT fit on 2013-2026 Ram short bed with 5th Wheel Prep Package. Automatically transfers fuel into primary tank via the TRAX 4 operating system TRAX 4 mobile app lets you monitor both your main & auxiliary tanks Complete installation kit included | Transfer Flow 50-Gallon In-Bed Auxiliary Diesel Fuel Tank System with TRAX 4 Made in USA