Just copied some nice info by Q, I assume that some people do not know that:

quote
The images below show you the links to click on the online parts database web site to cross reference part numbers between BMW models. It really helps to look up the part number first...then highlight that part number and copy it...this allows you to "paste" into the appropriate dialog boxes once you click the links highlighted in the images below:

Click here...
http://www.realoem.com/bmw/select.do

http://memimage.cardomain.net/member...05_52_full.jpg
http://memimage.cardomain.net/member...05_93_full.jpg
http://memimage.cardomain.net/member...05_94_full.jpg