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AQUA KING™ II Standard Fresh Water Pump 24 VDC 3.0 GPM

SHURFLO®’s AQUA KING™ II Standard Fresh Water Pump’s design was created with unique over-molded single-piece diaphragm and internal by-pass, assuring long life and top performance in all plumbing systems. These fresh water automatic demand pumps are quiet and can run dry without damage. Sealed switch. Ignition protected. Thermally protected. 1/2" hose barb fittings are included (aftermarket models only).


California residents: see Proposition 65 information

Installation & Operation


Data Sheet / Replacement Parts

pds 4138-131-X65.pdf



AQUA KING™ II Standard Fresh Water Pump 24 VDC 3.0 GPM

Model Numbers OEM/Aftermarket

4138-131-A65, 4138-131-E65


24 VDC

Dimensions Inches/Millimeters

8.2" X 4.9" X 4.1" [208 X 124 X 104mm]

Flow Rate GPM/LPM

3.0 GPM [11.35 LPM]

Amps (Max.)


Shut-Off Pressure

55 PSI [3.8 BAR]

3901 Replacement
Sealed Switch
Sealed Motor
Corrosion Resistant Electro Coated Motor
4 Independent Chambers
Built-In Check Valve
Co-Molded Diaphragm
Adjustable Switch
Self-Priming up to 6 Feet
Dry Run Capability
Thermally Protected
Ignition Protected, CE
Model Number 4138-131-A65

OEM 3.0 GPM [11.35 LPM]

Model Number 4138-131-E65

Aftermarket 3.0 GPM [11.35 LPM]

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