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The WP120 is a high performance, long life, severe duty electric water pump used in cooling systems in extreme environments. It can be used in off road applications, power generation, and large vehicle applications including fuel cell, diesel, electric, and other alternative fuel applications.

Advanced Diagnostics

Intelligent diagnostics help the user understand how the pump and the entire system is operating. The diagnostics can be communicated through SAE J1939 CAN for real time analysis, or diagnostic data can be downloaded using EMPowerConnect service tool and sent to EMP for analysis. This is especially useful for troubleshooting or system development, and dry run detection.

Brushless permanent magnet motors are combined with EMP designed motor control electronics to provide a high-efficiency long life fan. Brushless motors have no contacting parts to wear and reduce life.  The WP120 has motors available in 12V and 24V options.

Our controller features include protections against…

  • Locked rotors
  • Over temperature
  • Over current
  • Over voltage
  • Reverse battery

Our SmartFlow technology allows our line of components to communicate in a variety of styles to meet customer needs.

  • J1939 CAN
  • On/Off
  • Contact us about control customizations

EMP pumps are sealed and fully submersible for long life operation when exposed to the elements. Pumps are validated to withstand submersion and direct pressure wash.

EMP electric water pumps have the ability to read external temperature sensors and control speed based on this input. They are also able to broadcast temperatures to the vehicle via SAE J1939 CAN.

The motor, electronics, and fluid design have been optimized for high efficiency. The end result is the highest possible flow and pressure for a given amount of input power. The design is also packaged to have as small a footprint as possible for the given pump performance and minimize sound output.

EMP water pumps are validated to withstand all field conditions including thermal cycles, salt spray, pressure wash, thermal shock, vibration and shock, electrical transients, ESD, reverse battery and more. Durability testing has surpassed 23,000 hours of continuous operation at maximum speed and operating temperature.

EMP Pumps can be controlled manually using EMPower Connect™ Service Tool. The software in the pumps can be changed or upgraded in the field using this tool. History data can be downloaded and includes hours of operation, temperature data, voltage data, calibration information, histogram data, and diagnostic fault codes.

Pump and Controller Specs
Flow and Pressure6 gpm @ 35 psi6 gpm @ 35 psi
Overall Package Weight6.4 lbs6.4 lbs
Sealing RatingIP6K9KIP6K9K
Rated Voltage9 - 18 VDC18 - 32 VDC
Operating Temperature-40° to 203° F-40° to 203° F
Storage Temperature-40° to 257° F-40° to 257° F
Max Current
Pump Speed Range500 – 5500 RPM500 – 5500 RPM
Hose Connections1.0"1.0"
Control InputsOn/Off
Temp Sensor
CAN J1939
Temp Sensor
CAN J1939
Controller Temperature Range-40° to 203° F-40° to 203° F
Product Options
Carbon Steel
Stainless Steel
CAN J1939
Pressure vs Flow Performance
WP120 Pressure vs Flow Performance Diagram
Performance Comparison
WP120 Performance Comparison Diagram
WP120 Diagram
WP120 Diagram