Shurflo AQUA KING II Standard Fresh Water Pump - 12 VDC, 3.0 GPM - 4138-111-E65

Enjoy reliable, consistent water pressure onboard with the Shurflo AQUA KING II Standard Fresh Water Pump 4138-111-E65, a high-performance 12 VDC diaphragm pump designed for marine and RV freshwater systems. Delivering 3.0 gallons per minute (GPM), this pump provides smooth, on-demand water flow for sinks, showers, and fixtures without the need for an accumulator tank.

The AQUA KING II features internal bypass technology to reduce cycling and ensure quiet operation, making it ideal for comfortable onboard use. Built with corrosion-resistant, marine-grade materials, this pump is engineered to withstand harsh environments while delivering long service life. Its compact footprint allows for easy installation in tight spaces.

Trusted by boaters and RV owners alike, the 4138-111-E65 freshwater pump delivers dependable performance and consistent pressure wherever you travel.

Reliable Marine Performance

This pump is built to withstand harsh environments with a focus on durability and consistent flow.

• Smooth Flow Technology: Features a 4-chamber diaphragm and an internal bypass that reduces rapid cycling. This allows for a steady flow even at low demand, such as a trickling faucet, without the need for an accumulator tank.

• Heavy-Duty Construction: The motor is protected by a seamless, e-coated shell to resist corrosion. It also includes a sealed pressure switch and sealed end bells to prevent moisture damage.

• Safety & Protection: It is ignition protected (safe for engine rooms) and thermally protected, meaning it will automatically shut off if it begins to overheat and restart once cooled.

• Self-Priming & Dry-Run: The pump can self-prime up to 6 vertical feet and is designed to run dry without damage, protecting the unit if your water tank runs empty.

Key Features

• 3.0 GPM Flow Rate: Effortlessly supports up to three fixtures (e.g., galley sink, head, and washdown) simultaneously.

• Quiet & Smooth: Features a heavy-duty motor and noise-reducing rubber feet to minimize vibration throughout the hull.

• Self-Priming: Capable of vertical lifts up to 6 feet, allowing for flexible installation locations above the water tank level.

• Run-Dry Capability: Built-in protection ensures the pump won't be damaged if your water tank runs empty.

• Ignition Protected: Designed to meet high safety standards for installation in engine compartments or gas-vapor environments.

• Integrated Pressure Switch: Automatically shuts off at 55 PSI to prevent system over-pressurization

Technical Specifications

• Flow Rate: 3.0 GPM [11.3 LPM]

• Voltage: 12V DC (6.5 Max Amps)

• Shut-Off Pressure: 55 PSI [3.8 Bar]

• Ports: 1/2"-14 NPSM-Male

• Dimensions: 8.2" x 4.9" x 4.1"

• Inclusions: Typically includes two 1/2" hose barb straight swivel fittings.

• Warranty: 3-Year Manufacturer Warranty

Ideal for boats, yachts, and RVs, the Shurflo AQUA KING II Standard Fresh Water Pump delivers consistent pressure and quiet operation backed by Shurflo and Pentair engineering.

Installation Tip: To minimize noise and vibration, it is highly recommended to use at least 18 inches of flexible high-pressure hose on both the inlet and outlet ports rather than connecting directly to rigid plumbing.