Johnson Pump Aqua Jet WD 3.5 GPM 12V Pump Kit

The Johnson Pump Aqua Jet WD 3.5 GPM 12V Pump Kit is a compact, self-priming water transfer system engineered for marine, RV, and portable water supply applications. Powered by a 12-volt DC motor, this pump delivers a maximum flow rate of 3.5 gallons per minute at 70 psi, making it suitable for freshwater washdown, deck cleaning, emergency water transfer, and off-grid water distribution on vessels and mobile platforms.

This complete kit includes all necessary components for immediate installation: a 25-foot coiled hose with 1/2-inch inner diameter, a bulk head fitting with integrated check valve for secure deck or tank mounting, a PUMProtector inlet strainer to prevent debris from entering the pump, and a spray nozzle with check valve. The integrated check valve design prevents backflow and siphoning when the pump is idle, eliminating the need for manual shutoff of external lines. At maximum pressure of 70 psi, the pump handles consistent flow across typical duty cycles without thermal stress.

Buyers typically choose the Aqua Jet WD for marine applications where reliable 12V power is available—sailboats, fishing vessels, and rigid-hull inflatables—as well as RV owners requiring portable freshwater systems for camp hookups and tank filling. The self-priming capability eliminates the need for manual priming after extended storage, critical for seasonal marine equipment. The compact footprint and included hose make this pump ready for field deployment without additional adapter purchases or complex plumbing.