This is a genuine BMW adjusting pulley, part number 11 28 1 433 571. The number stamped on the part is 11281433571; BMW's catalog files it under the short number 1433571. You will find it on our Engine shelf, under Other Engine parts.
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 2 diagrams, among them Belt Drive Climate Compressor (11_2263) and Belt Drive Climate Compressor (11_6231). It weighs about 870 g (1.9 lb). It also comes in BMW kit Set, belt drive, A/C compressor (2250246).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
