Pierburg "CWA50“

Pierburg's electric water pump in the small to medium capacity range.

  • Robust and innovative design
  • Brushless canned motor
  • Integrated variable speed controller
  • Controllable via PWM
  • Reliable and maintenance free
  • High delivery rates

Pierburg CWA50

The CWA50 is the smallest version of the CWA type pumps from Pierburg.
Suitable for intercooling in combustion engine vehicles and cooling of various systems in electrical vehicles.


  • Name: "Pierburg CWA50"
  • Operation voltage: 8-16 volts
  • Weight: approx. 1.0 kg
  • Current consumption: 5.0 to 7.0A / (approx. 0.2mA in standby mode)
  • Nominal diff. pressure: ≥ 0.53 bar *
  • Flow rate: approx. 25 l/min @ 0.53bar / 35 l/min @ 0.25bar
  • Speed: approx. 6000 rpm
  • Temperature range: -40°C – 110°C (water) / -40°C – 120°C (ambient)
  • Protection: IP 67

Part numbers:

  • Pierburg: 7.06033.31.0 / 7.06033.32.0
  • Porsche: 95860656700
  • VW: 7P0965567 / 8K0965567B


CWA50 Datasheet EN (pdf)

3D CAD files:
CWA50 3D CAD (zip)

PWM Info:
CWA PWM Info (pdf)

Technical drawing:


Flow rate:





* Pump pressure is not the same as the system pressure.
Those pumps can of course be used in normal automotive cooling systems with system pressures
in the range of 0.8 to 1.2 bar for instance.
The pump pressure or differential pressure expresses the ´resistance´ of which the pump has to work against.
Tip: A mechanical thermostat is responsible for about half of that resistance. (in most cars)


We will gladly provide you with our controller (tinyCWA) to control the pump.
Just write us an email in this matter or take a look at our online store.
There you will also find product bundles and accessories. :-)