Transfer Flow 0800116758 100 Gallon In-Bed Auxiliary Fuel Tank w/ Trax 4 | 2008-2024 Ford/Dodge/GM Trucks

Features:

• 100-gallon capacity for extended driving range
• TRAX 4 system automates fuel transfers
• AutoTrans technology for safer fuel management
• Built from high-strength aluminized ReliaSteel®
• Robot-welded seams for maximum durability
• Powder coated black to resist corrosion
• Baffled interior reduces fuel slosh during driving
• Includes complete hardware and wiring for install
• Optional LCD in-cab fuel level monitor available
• TRAX 4 app lets you track fuel from your phone
• Fits 2008–2024 Ford, Dodge, and GM pickups
• Made in the USA with a 6-year warranty

100 Gallon Auziliary Tank for the Long Haul

If your idea of a good drive is one that doesn’t involve hunting for fuel stations, the Transfer Flow 100-Gallon In-Bed Auxiliary Fuel Tank with TRAX 4 is your kind of upgrade. Whether you're hauling across state lines, working long hours in remote areas, or just tired of making frequent fuel stops, this tank gives you the freedom to go farther—without second guessing your range. This is the largest in-bed auxiliary tank Transfer Flow offers, and it’s built for serious travel. With 100 gallons of additional diesel capacity on board, you can cover major distances—think Miami to Chicago—without needing to stop for fuel. That kind of range isn’t just convenient; it’s a game changer for anyone towing a trailer, working long-distance routes, or chasing backcountry adventures where stations are few and far between.

TRAX 4 System with Mobile App

At the heart of this system is the TRAX 4 fuel management system, which automates transfers from the auxiliary tank to your truck’s main tank. It's not gravity-fed like some older systems. This setup uses sensors and onboard programming to move fuel only when needed, based on your truck’s main tank level. It's hands-free, safe, and more reliable, especially during long hauls or rough terrain. You also get the added benefit of AutoTrans technology, which helps regulate the system even further for peace of mind. And here's a feature that’s easy to appreciate: the TRAX 4 mobile app. Just enter your vehicle and tank info, and you can monitor your fuel levels straight from your phone. You’ll see exactly how much fuel you have in both tanks, whether in gallons or percentage. Prefer not to use an app? Transfer Flow also offers an optional in-cab LCD monitor that gives you a clear, real-time look at your auxiliary tank’s fuel level.

High-Quality Construction & Design

The tank itself is built from ReliaSteel, a high-yield U.S.-sourced aluminized steel that's powder coated black to fight off rust and corrosion. Inside, baffles help control slosh—something you’ll really notice when cornering or driving off-pavement. Robot-welded seams reinforce the structure for long-term durability, even under constant use. Everything you need for installation is included—wiring harness, mounting hardware, and the TRAX 4 controller—making this a complete, no-hassle system. It’s designed to fit 2008–2024 Ford, Ram, and GM full-size pickups, and it sits cleanly in the bed while still leaving room for tools, gear, or a fifth-wheel setup depending on your layout. And like all Transfer Flow products, it’s built right here in the USA and backed by a 6-year, unlimited mile warranty.

Fits:

• 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 Dodge / Ram Cummins
• 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 Ford Powerstroke
• 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 GM Duramax

Fitment Note: 2010-12 Ram Mega Cab and Crew Cab short bed pickup with single rear wheels require a filler neck (part no. 0500115461).

Note: A $350 Shipping Surcharge will be added