An in-bed auxiliary fuel tank is an additional fuel system installed in your truck bed that increases your total fuel capacity. Instead of replacing your factory tank, it works alongside it to extend driving range or provide fuel for equipment through a built-in transfer system.

Are The FuelBox in-bed tanks legal to use on the road?
Yes. The FuelBox systems are designed to meet DOT requirements for in-bed fuel systems when used for diesel applications. Always ensure your setup complies with federal, state, and local regulations depending on how you configure your system.

No. The FuelBox auxiliary fuel systems are not gravity-fed. Instead, they use a controlled fuel transfer system that pumps fuel from the top of The FuelBox tank into the truck’s factory fuel tank. This Auto Fuel Controller helps prevent overfilling, fuel leaks, and check engine light issues that can sometimes occur with gravity-fed auxiliary fuel tanks.

No. The FuelBox auxiliary fuel systems are not gravity-fed. Instead, they use a controlled fuel transfer system that pumps fuel from the top of The FuelBox tank into the truck’s factory fuel tank. This Auto Fuel Controller helps prevent overfilling, fuel leaks, and check engine light issues that can sometimes occur with gravity-fed auxiliary fuel tanks.

Yes. When equipped with a transfer pump system, your FuelBox can be used to fuel equipment, trucks, generators, and machinery directly from your in-bed tank. This is ideal for contractors, farmers, ranchers, and mobile operations.

Yes. Many of The FuelBox models are designed with clearance for gooseneck and fifth-wheel towing setups in mind. Always confirm the specific model dimensions to ensure proper fitment with your hitch system.

No. Because The FuelBox systems are not gravity-fed, they help maintain accurate factory fuel readings and reduce issues with range estimation or check engine light triggers associated with improper fuel transfer setups.

In-bed fuel systems provide safer, cleaner, and more efficient fuel storage compared to portable cans. They reduce spills, eliminate repeated trips to fuel stations, and allow you to carry significantly more fuel securely.

Yes, our tanks do not alter the stock fuel delivery system. By not altering this system the FuelBox fuel tanks are approved for use without exemption by the California Air Resources Board (CARB).

No, our tanks are DOT certified & follow EPA regulations for DIESEL FUEL ONLY. The reason for this is all our tanks are vented to the atmosphere. All 1996 and newer gasoline pickup trucks are equipped with a sensor in the tank for emission. If you install our AFC kit on one of these trucks it will set a check engine light and fail emission test.

Aluminum Tanks – 3 Year Warranty, on all component parts, and against defects in material & workmanship AFC Products – 1 Year Warranty Fuel Pump 1 Year Warranty limited to Warranty provisions of Original Manufacturer Transfer Pump – 2 Year Warranty limited to Warranty provisions of Original Manufacturer

Yes we can ship the FuelBoxes over the U.S. and Canada. We recommend shipping to a commercial address or to shipping hub to keep price of shipment down, but we can ship to a residential address if requested.

No, we can also build fuel tanks out of stainless steel. We prefer to build all of our tanks from marine grade aluminum because you will not run into problems with rust or corrosion.

Our family owned and operated company has been in business for over 34 years in the automotive industry and have been doing the FuelBox business for 15 years. It is still family owned and operated to this day and we are proud to have an American built product.

Yes, all of our tanks have a minimum of two baffles for extra support, durability, and to help reduce fuel slosh.

A long bed is approximately 8 ft and a short bed is approximately 6.5ft.

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