Try to complete your personal data under your name, such as sedan/toruing, engine, built month/year and so on as the others have too. It is difficult to answer questions if there are no details available. Sometimes even one month difference in production year is very important to tell you details.
If you do not know the exact data, go to my website below and look for the VIN decoder and just type in the VIN and you will have the exacy engine type, production month/year, automatic transmission or manual type and all the details which are important.
Back to your question: can you find the part here which is missing?
http://www.realoem.com/bmw/showparts...56&hg=51&fg=30