Looking for a part number for rear wiper blade part...
 

as the title states my 06 x3 is missing a cover on the rear wiper blade where the nut holds down the wiper leaving it exposed. Ive been on most part sites and they dont seem to list any so if anyone of you guys have replaced it can you help me out.

See if this link works:

Think you mean this:

07WIPER ARM COVER161623427800$2.62

http://www.realoem.com/bmw/diagrams/j/r/221.png

RealOEM.com BMW E83N X3 2.0d SINGLE PARTS FOR REAR WINDOW WIPER


HTH.