Johnson Pump Aqua Jet WD 3.5 Washdown Pump | 12V (10-13399-03)

The Johnson Pump 3.5 Aqua Jet Washdown 12V 10-13399-03 is a high-pressure, 5-chamber diaphragm pump designed specifically for demanding washdown applications. Whether you are rinsing salt spray from your deck, cleaning mud off an anchor, or washing down a fish box, this pump provides the consistent power and pressure needed for a thorough clean.

Smooth and Quiet Cleaning Power

Unlike traditional 3-chamber pumps that "pulsate" and vibrate, the Aqua Jet WD 3.5 utilizes a 5-chamber design. This provides a significantly smoother flow and quieter operation. The integrated pressure switch is set to 70 PSI, ensuring a powerful jet of water that activates automatically when you pull the spray nozzle trigger and shuts off immediately when you release it.

Key Features:

• 5-Chamber Construction: Delivers a smooth, pulse-free flow that is gentler on your plumbing and much quieter during use.

• 70 PSI Pressure Switch: High-pressure shut-off calibrated for heavy-duty cleaning and effective debris removal.

• Self-Priming: The pump can prime itself up to 7 feet (2.1m), allowing for flexible mounting locations above the waterline.

• Dry-Run Capability: The heavy-duty diaphragm and valve design can run dry for short periods without sustaining damage.

• Durable Motor: Features a high-torque motor with a seamless shell and powder-coated finish for superior corrosion resistance in marine environments.

• Quick-Connect Ports: Includes O-ring sealed ports (hose barb and threaded) for easy installation, maintenance, and winterization.

• Ignition Protected: Meets ISO 8846 and USCG standards, making it safe for installation in engine compartments.

In The Box

• (1) Johnson Pump Aqua Jet WD 3.5 12V Pump

• (1) PUMProtector Inlet Strainer (40-mesh internal filter)

• (1) Bulkhead Trigger Nozzle / Spray Pistol

• (1) Port Connector Kit:

  • 1/2" NPT / 3/4" Hose

  • 3/4" GHT (Garden Hose Thread)

  • 3/8" BSP x 1/2" Barb

Technical Specifications:

• Model Number: 10-13399-03

• Flow Rate: 3.5 GPM (13.2 L/min)

• Voltage: 12V DC

• Pressure Cut-off: 70 PSI (4.8 bar)

• Fuse Size: 15 Amps

• Body Material: PP/PPA

• Valves: EPDM

• Diaphragm: Santoprene

• Weight: 4.5 lbs (2 kg)

Why Choose the Aqua Jet WD 3.5?

The Johnson Pump 3.5 Aqua Jet Washdown 12V 10-13399-03 is the industry standard for mid-sized center consoles and cruisers. It strikes the perfect balance between manageable power draw and effective cleaning pressure. Its 5-chamber design is not only quieter but also reduces the "hammering" effect in the hoses, which extends the life of your washdown fittings and spray nozzles.

Installation Pro-Tips:

To protect your investment, always install the PUMProtector™ intake strainer (sold separately or as part of a kit) on the inlet side of the pump. This prevents sand, shell fragments, and seaweed from entering the pump chambers and fouling the valves.

To maintain maximum pressure, use wire-reinforced suction hose on the intake side to prevent the line from collapsing under the pump's vacuum. Always install the included PUMProtector strainer on the intake to prevent debris from damaging the internal valves.

Features: