Rubber boot — a genuine BMW part, number 12 31 1 735 915. The number stamped on the part is 12311735915; BMW's catalog files it under the short number 1735915. You will find it on our Electrical shelf, under Alternator with motor and mounting.
It fits every E36 body style (320i, 323i, 325i, 328i and M3, 1992–1999), with the M50, M52, S50 or S52 engines — and the European-market versions.
BMW draws it on the Generator cooling (12_0391) diagram. It weighs about 48 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.
