This is a brand new power steering pump for Mercedes W251 and W164 series.

Please note that this power steering pump replacement in W251 and W161 series will fit the following engines only:

GL320 CDI, ML280 CDI, R280 CDI and R320 CDI models.

Common problem with the power steering pump after some time that they start to loose power, leak or give loud whining noise. It means that your pump is due to be changed.
Our power steering pump is a perfect replacement for the listed models above.