Hands free telephone microphone wiring — a genuine BMW part, number 65 61 8 357 450. The number stamped on the part is 65618357450; BMW's catalog files it under the short number 8357450. You will find it on our Instruments & Electronics shelf, under Radios.
It fits the E36 sedan, coupe, convertible and touring (318i, 320i, 323i, 325i, 328i and M3, 1992–1999), with the M40, M42, M43, M44, M50 or M52 and other engines — and the European-market versions.
BMW draws it on 2 diagrams, among them Hands-free system (84_0251) and Hands-free system (84_0283). It weighs about 90 g (0.2 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.