Johnson Pumps 10-13407-07 Aqua Jet 5.2 Wash Down Pump, 12VQuiet and pulsation free even at low speeds, the Aqua Jet five chamber diaphragm pump provides the perfect deck wash solution for both small and medium sized leisure and commercial boats. As a wash down pump, the Aqua Jet offers much higher pressure than competitive models, making clean-up f..