Shurflo by Pentair AQUA KING II Standard Fresh Water Pump - 24 VDC, 3.0 GPM

AQUA KING™ II Standard Fresh Water Pump is the perfect addition to your marine or boating setup, providing reliable and efficient water circulation essential for onboard freshwater systems. Powered by 24 VDC, this pump delivers a consistent flow rate of 3.0 GPM (11.35 LPM), ensuring your vessel's water needs are met without hassle.

Performance and Durability

Designed specifically for marine applications, Shurflo's 4138 fresh water pump features a unique over-molded single-piece diaphragm and internal by-pass. These innovations ensure long life and top performance, even in the demanding environment of marine plumbing systems. The 4138 pump is built for smooth flow with no rapid cycling, minimizing wear and tear over time.

Key Features

• 3901 Replacement – Direct replacement for Shurflo's 3901 model.
• Sealed Switch and Motor – Protects against moisture and corrosion.
• Corrosion-Resistant Electro-Coated Motor – Enhances longevity in marine environments.
• 4 Independent Chambers – Ensures reliable operation under varying conditions.
• Built-In Check Valve – Prevents backflow and maintains system pressure.
• Co-Molded Diaphragm – Provides a durable and leak-resistant seal.
• Adjustable Switch – Allows customization of shut-off pressure to suit your needs.
• Self-Priming Up to 6 Feet – Facilitates easy installation in various vessel layouts.
• Dry Run Capability – Operates safely even when the water supply is interrupted.
• Thermally Protected – Prevents overheating and extends pump life.
• Ignition-Protected, CE Certified – Meets safety standards for marine use.

Technical Specifications

Specification	Details
Voltage	24 VDC
Flow Rate	3.0 GPM (11.35 LPM)
Current	3.8 Amps
Shut-Off Pressure	55 PSI (3.8 BAR)
Box Dimensions	5"H x 6"W x 11"L
Weight	5 lbs
UPC	752324012398

Additional Resources

Quick Guide (PDF)
Owner's Manual (PDF)

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.