Power Steering Pump 21-120 Replacement For Mercedes-Benz GL450 4.6L 4.7L, GL550 5.5L, ML350 3.0L 3.5L, ML550 5.5L, R350 3.5L, CL550, E350, E550, S550, CLS550 Power Assist Pump

Make sure when installing to see where all bolts are . There is a 3rd bolt in back kind of hidden. But just time consuming to remove everything . But average person could do . Ps after install make sure to jack up car vehicle off his cap removed from power steering reservoir turning wheel left or right to burp the air out of the system or it can cause damage to the pump. I’m sure there is different ways to do but this is how I do it .

no oring for the housing

Pump was an OEM fit. One of the fitting from the reservoir was swapped from the original pump.

The unit worked great for the first 30 days. Now it squeals and leaks fluid out of the top somewhere. A large amount of fluid seeps from the case when the engine is stopped.

encajo en mi vehiculo en forma precisa, quede muy conforme ,

Simply put, it works but with noticeably more effort than oem, and also there’s an attention getting noise when idle, that only gets louder when steering. I would not buy these again…prefer to pay more for a better product.

Installed on my 2008 GL 550. Parts fit and finish on par with MB parts. So far it has performed perfectly, great steering feel.

Satisfied with this purchase. 2nd time purchasing and Will def buy again if need be.

cuando la camioneta ya esta caliente, la direccion se pone dura cuando las revoluciones son abajo de 800