 Took my car to S.F. BMW for a 60k check 
up. I was told that the cost would be 
650.
They then took of new wiperblades and 
replaced them etc. alot of hidden costs.
They told me that the radiator was 
leaking and said that it with 
the "plastic waterpump and thermostate 
housing" at a cost of 3800. I took the 
car to a independent shop who informed 
me that the production date of my car 
indicated that it would not have the 
plastic waterpump.
If you need parts for your BMW try the 
Partsbin.com they sell OEM and after 
market parts.
S.F. BMW OEM Radiator          385
The Partsbin OME with shiping  169
The radiators are both made by baher 
and are identical.