This is a genuine BMW siren lock with wire, part number 82 92 9 405 839. The number stamped on the part is 82929405839; BMW's catalog files it under the short number 9405839. You will find it on our Merchandise & Accessories shelf, under Other Universal Accessories parts.
It fits every E36 body style (318i, 318ti, 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 the Alarm system (03_1007) diagram. It weighs about 129 g (0.3 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
