This 10-gallon capacity tank makes it easy to carry and dispense DEF fluid along with diesel fuel. The JDI-DEF10 Diesel Exhaust Fluid tank is molded out of rugged polyethylene and is designed to fit in storage compartment of the 106-gallon Carry tank. It is a self-contained tank that includes a separate 12 volt pump, dispensing hose and nozzle. It is powered by the same 12 volt source as the Carry tank with a separate power plug. No additional power cables are required.