Review on Enhanced Power Steering Pump Replacement for Mercedes Benz ML320 ML350 ML430 ML500 ML55 AMG W163 by Steve Waldbillig

ATTENTION. So far, so good. Note, however, that with these power steering pumps in general, it can be VERY difficult to get the reservoir set up properly. If you haven't recently replaced the o-ring on the reservoir port, be sure to do so and possibly the reservoir as well. If the reservoir is not seated properly, try relocating the fluid inlet on the pump that connects to the reservoir. If it's not completely straight, it's not seated properly on the tank. It can be gently pressed with pliers or by inserting a small screwdriver into the neck to slide it with a lever. It took me a long time to put myself in order. Otherwise liquid will escape from the connection. The safety clip must be tightened very firmly, otherwise the container will not be mounted and released correctly. Hope that helps!