Aerial diplexer — a genuine BMW part, number 84 10 6 945 425. The number stamped on the part is 84106945425; BMW's catalog files it under the short number 6945425. You will find it on our Instruments & Electronics shelf, under Car telephone, built-in.
It fits the E46 coupe and convertible (325i, 330i and M3, 2001–2006), with the M54 or S54 engines — and the European-market versions.
BMW draws it on 5 diagrams, among them Single parts SA 633, trunk (84_0663) and Single parts SA 633, trunk (84_0665). It weighs about 260 g (0.6 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
