Ok, so I took my car to a Mercedes authorized dealer because my steering was making obvious noises. What I was told is that the power steering pump and the Rack needed to be replaced. The total for the repairs is about $4000. Now that seems way too high and I have decided to replace the pump myself. I found these great instructions on here by SirRich http://www.benzworld.org/forums/blog...ring-pump.html
What I'm trying to find out is which pump I need. Going to this site, 2001 Mercedes-benz Ml320 - Pwr Strg Pump, Hose and Kits Parts -CARDONE / A-1 CARDONE,IMC- Autoparts Giant
it appears there are a few different pumps, so can someone help me understand what pump I need to order?