The local Austrian dealer ATP Majer does not find the filter in the official sales program so I sent him a picture and description. He e-mailed Mahle in Germany and also submitted the picture of the filter. In parallel he e-mailed another company and asked if they have a substitute or equivalent. I liked the line saying " I really want to help the bikers getting the part for an acceptable price!"
So finally ATP in Austria tried to help but unfortunately Mahle (Mrs. Simone Lang) replied that this filter is not available through the aftermarket sales program.
Sorry guys. However, a famous German Motorcycle Magazine has asked readers to send information about overpriced parts or parts which are not available as spare parts. Llike the filter or waterhoses from KTM requiring to buy the whole thermostat.
I have to try to find which magazine it was and I will send them the issue. But I really doubt it will help. A letter to BMW will most probably not even reach the responsible persons