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Information on the product

Warning about product fakes

of the CWA 200 electrical coolant pump

How can you tell whether an electrical water pump is a genuine part or a fake? We will show you the difference between the genuine Pierburg CWA 200 water pump and a fake.

It has come to our attention that there are product fakes of the CWA 200 electrical coolant pump originating from the Asian market.


We expressly warn against the use of these product fakes.
None of the pumps in our possession fulfilled the requirements of the vehicle manufacturer. In the event of a failure of such a pump, the engine overheats and this can result in severe consequential damage.


For your safety, we take legal steps against any form of illegal import and the introduction to the market of product fakes.

On the following page you will find differentiating characteristics as well as an excerpt from the test report.

Comparison of technical data


Pierburg CWA 200Counterfeit
Voltage range[V]8 ... 1610 ... 15.5
Nominal pressure difference[bar]0.45max. 0.4
Nominal volumetric flow[m³/h]7.0max. 2.0
Nominal speed[rpm]4.500max. 3.500
Ambient temperature range[°C]- 40 ... + 140no data

Technical findings
Excerpt from the technical findings of the
test laboratory:

"The counterfeits do not meet the [...] required nominal point for volumetric flow (flow rate) and malfunction as soon as they are switched to higher performance ranges.
Particular areas of weakness are the electric motor and electronic components, which malfunction, completely fail and become irreparably damaged after just a short time under
increased stress.
[...] the electronic components present considerable difficulties in the communication between the pump and vehicle control unit, meaning that correct operation is not possible.
Furthermore, the counterfeits do not have shielding for the electronics, resulting in disruption to other electrical circuits of the engine.
The pump fails and active cooling of the engine is no longer guaranteed. [...]
The installation of these counterfeits would represent gross negligence."

Original Pierburg coolant pump