Genuine BMW part 61 11 2 159 621: Stick-on window antenna. The number stamped on the part is 61112159621; BMW's catalog files it under the short number 2159621. You will find it on our Electrical shelf, under Wiring harness. It supersedes the older number 0412563, so a part carrying that number is the same part.
It fits every E46 body style (320i, 323i and 325i, 1999–2006), with the M52, M54 or M56 engines — and the European-market versions.
BMW draws it on 2 diagrams, among them Retrofit kit, hands-free kit, UNI (03_2781) and Retrofit kit, hands-free kit, UNI (03_2812). It weighs about 47 g (0.1 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
