IN-BED AUXILIARY FUEL TANKS
Enjoy Worry-free Road Trips With a Transfer Flow Auxiliary Fuel Tank System
Experience unmatched flexibility with Transfer Flow’s lineup of auxiliary fuel tanks, available in capacities from 37 to 100 gallons and designed to meet a wide range of driving needs. From cross-country adventures and RV weekends to off-road exploration or everyday convenience, there’s a solution built to enhance your journey.
Our auto-transfer auxiliary fuel tanks significantly extend your driving range, giving you confidence on long hauls and in remote areas where fuel stops are few and far between. Designed for seamless integration with your pickup truck, these systems deliver dependable performance with effortless operation. Powered by the advanced TRAX 4™ operating system, fuel transfers happen automatically—no switches or manual intervention required.
Stay connected on the road with the TRAX 4 mobile app, which provides real-time fuel monitoring right from your smartphone. Track fuel levels, receive distance-to-empty alerts, and monitor transfer activity with ease.
Proudly made in the USA, Transfer Flow auxiliary fuel tanks are constructed from high-quality aluminized steel and include everything needed for a smooth installation. With internal baffles for added strength and durability, these tanks are built to go the distance—so you can, too. Elevate your travels with extended range and total peace of mind.
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37 Gallon In-Bed Auxiliary Fuel Tank System - TRAX 4
Our 37-gallon in-bed auxiliary fuel tank system is designed to fit under a Pace-Edwards and Truck Covers USA retractable canister bed covers.
40 Gallon In-Bed Auxiliary Fuel Tank System - TRAX 4
Our 40-gallon in-bed auxiliary fuel tank system is designed to be compatible with most diesel trucks for a universal fit.
40 Gallon In-Bed Under Tool Box Auxiliary Fuel Tank System - TRAX 4
You'll get a winning combination when you match our 40-gallon in-bed auxiliary fuel tank with your over-the-bed-rail tool box!
50 Gallon In-Bed Auxiliary Fuel Tank System - TRAX 4
More than double your driving distance when you install a 50-gallon in-bed auxiliary fuel tank system.
75 Gallon In-Bed Auxiliary Fuel Tank System - TRAX 4
Investing in an extra 75 gallons of onboard fuel gives you invaluable peace-of-mind on the road.
100 Gallon In-Bed Auxiliary Fuel Tank System - TRAX 4
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.