Transfer Flow 0800116625 50 Gallon In-Bed Auxiliary Fuel Tank System Trax 4 | 2008-2025 Ford/Dodge/GM Trucks

Features:

• Fits 2008–2025 Ford, GM, and Ram trucks
• Diesel compatible only, not for gas vehicles
• TRAX 4 system enables automatic fuel transfer
• TRAX 4 app lets you monitor fuel levels
• ReliaSteel construction resists rust and impact
• Fits under most standard tonneau covers
• Will not interfere with 5th wheel hitches
• Recessed cover protects critical fuel components
• Baffled design reduces fuel slosh while driving
• Includes all hardware for complete installation
• Made in the USA with robot-welded seams
• Backed by a 6-year, unlimited mile warranty

Take Long Trips Without Watching The Gauge

If you're tired of planning your trips around the next fuel stop, this 50-gallon in-bed auxiliary fuel tank from Transfer Flow might just be the upgrade you’ve been looking for. Whether you're towing across state lines or heading out to explore wide open spaces, this system helps you go farther without the hassle of pulling over constantly to refuel. It’s built to tuck neatly into your bed, so you keep valuable space for cargo, gear, or your fifth wheel setup. The design even fits under most standard tonneau covers, which means you don’t have to choose between fuel capacity and covered storage. With the TRAX 4 computer-controlled system handling fuel transfers for you, all you do is drive while the tank keeps your main tank topped off. It’s the kind of convenience that pays off every mile, especially when you're running long hauls or working remote sites. Backed by a 6-year unlimited mile warranty and made in the USA, this tank gives you peace of mind and more miles per stop.

Smart Design That Works Behind The Scenes

This auxiliary system isn't just about extra fuel, it’s engineered for seamless integration and reliable performance. The tank is crafted from 12- and 14-gauge ReliaSteel, a high-strength U.S. aluminized steel, then powder coated for long-lasting protection against corrosion and rough use. Its baffled interior minimizes fuel slosh, keeping transfers smooth and stable while you're on the move. The real standout, though, is the TRAX 4 system, which uses AutoTrans technology to automate fuel transfers from the auxiliary tank to your main tank. You can monitor everything through the TRAX 4 app, showing fuel levels, tank percentages, and real-time pump activity. The tank mounts cleanly with all hardware included and does not interfere with fifth wheel hitches or powered bed features. For drivers of 2008–2025 Ford, GM, or Ram diesel trucks, this setup brings together strength, technology, and efficiency in one well-thought-out package. It’s a plug-and-play upgrade built to handle the demands of daily work and serious travel alike.

Fits: 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 Ford/Dodge/GM Trucks

Notes:

• Fits 2008–2025 Ford, GM, and Ram diesel trucks
• Not compatible with gasoline-powered vehicles
• Does not fit 2013–2024 Ram short beds with 5th Wheel Prep Package
• Certain Ram short bed models may require a separate filler neck
• TRAX 4 system automates fuel transfers safely
• Optional LCD monitor available if not using the TRAX 4 app
• Tank mounts with included hardware and bracket system
• Recessed cover protects key fuel components from damage
• Tank dimensions include added height and width from filler neck and mounting brackets
• May require checking bed space clearance with existing accessories
• $350 shipping surcharge applies at checkout