The Fuelbox provides the auxiliary fuel tank market with many options of fuel tank toolbox combos and the Auto Fuel Controller system, all DOT legal for diesel fuel.

We build custom auxiliary tanks, transfer tanks, auxiliary fuel tanks, double wall tanks, DEF tanks, and more. If you have a complete custom design or just need us to take an inch off here and there, that’s …

Increase driving range with an auxiliary fuel tank with toolbox built in! Auxiliary tanks can be used as additional capacity for a factory tank with the use of an RDS diesel install kit. Shop for better fuel …

Equipped with features like secure mounting systems and integrated fuel transfer pumps, aux diesel tanks offer convenience and peace of mind during your travels. Many models also include safety …

Diesel auxiliary tanks, crafted from high-quality aluminum for safe and efficient extension of fuel capacity in pickup trucks, fully compliant with DOT standards for reliable on-the-go diesel storage and transfer.

We offer a full line of Auxiliary Fuel Tanks for sale. Choose from sizes that start at 30 gallons and increase up to 110 gallons. We offer a variety of designs including rectangle, L Shaped, wedge, and …

Explore durable aluminum and steel transfer fuel tanks. Perfect for diesel, gasoline, and more—designed for safe, efficient refueling for trucks and industrial use.

Whether you need an in-bed auxiliary tank, a larger replacement fuel tank, or a reliable refueling tank, each of our products is engineered and manufactured with precision and pride right here in the USA.

We offer diesel and gas auxiliary fuel tanks in a wide range of capacities and shapes to serve as supplementary tanks for trucks, RVs, expedition vehicles, boats, and heavy equipment.

Auxiliary Fuel Tanks For Sale on FuelTanks.com, shop & compare top auxiliary fuel tanks brands on the #1 fuel tank website.