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Gasoline auxiliary fuel tanks from 30 to 66 gallons that ride in your truck bed and refill your main tank on the road. Diamond plate aluminum tanks with pickup and return fittings built in, meeting DOT requirements for gasoline auxiliary fuel tanks.
Weighing gasoline against diesel? Read our guide to in-bed auxiliary fuel tanks.
Gasoline can't gravity feed the way diesel does, because federal rules require it to be drawn from the top of the tank. So our tanks from Aluminum Tank Industries come ready for a pump setup, with the pickup and return fittings already in place.
A small inline fuel pump on the frame, with a toggle switch in the cab, moves fuel from the bed into your main tank. Flip it on when the main tank drops to about a quarter and off once it fills. The pump is sold separately, and a fill neck adapter that fits most gasoline trucks, plus a hose and clamp kit, connects the tank. Shop fuel tank accessories.
Rectangle tanks are the most common shape and run from 30 to 66 gallons, so you can match capacity to the room in your bed. The wedge sits tight against the bulkhead and slopes on the tailgate side, leaving the rest of the bed open and clearing a fifth wheel hitch.
Measure your bed, allowing for the mounting tabs and the fuel cap, and choose bright diamond plate or black powder coat. Running a diesel instead? Shop diesel auxiliary tanks. If you're not sure which tank fits your truck, request a quote. Fueling mowers or generators rather than your truck? Shop truck bed transfer tanks.