Check this out, looks like they are only about $60. Can you call the dealer parts dept to see if they have one in stock and get a ride there to pick it up? #14
http://www.realoem.com/bmw/showparts...85&hg=13&fg=20
All you have to do is connect the vacuum line to the end and push in the connector and hand twist the grey ring to connect. (wear gloves).