Switch f mirror adjust./fldng bck funct — a genuine BMW part, number 61 31 8 373 689. The number stamped on the part is 61318373689; BMW's catalog files it under the short number 8373689. You will find it on our Electrical shelf, under Switch.
It fits every E46 body style (320i, 323i, 325i, 328i, 330i and M3, 1999–2006), with the M52, M54 or S54 engines — and the European-market versions.
BMW draws it on the Various switches/Cigar lighter (61_1062) diagram. It weighs about 6 g (under 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.
