Fuel tank and toolbox combos from 30 to 95 gallons that put fuel and a key locking toolbox in one diamond plate aluminum unit. Choose transfer tank combos built under a U.S. DOT Special Permit, or auxiliary combos that meet DOT requirements.
Not sure whether you need a transfer or an auxiliary tank? Start with our Truck Bed Fuel Tank Buying Guide.
When your bed already carries tools, a separate tank and toolbox end up fighting for the same floor. Our combos from Aluminum Tank Industries build both into one unit, with stainless locking handles, gas shock lid supports and a full aluminum piano hinge.
Transfer tank combos let you fuel equipment on site and keep your tools locked up in the same footprint. They're legal for gasoline, diesel, kerosene, methanol and aviation fuel, and split models carry two different liquids in separate compartments.
Diesel auxiliary combos feed your factory tank by gravity through the Fuel Shotz install kit, sold separately, with no wires or switches. Your factory gauge stays on full until the auxiliary tank runs dry.
Gasoline auxiliary combos come with fuel pickup and return fittings built in. Because gasoline must be drawn from the top of the tank, you'll add a small inline pump with a switch in the cab, sold separately.
Decide first whether the fuel goes into your truck or into your equipment, then check each listing's overall dimensions against your bed. Every combo ships by freight and we coordinate delivery with you. Browse the selection below, or request a quote for a finish or setup you don't see.