This is a genuine BMW water outlet valve, part number 64 31 8 370 067. The number stamped on the part is 64318370067; BMW's catalog files it under the short number 8370067. You will find it on our AC & Climate Control shelf, under Other Heater and Air Conditioning parts.
It fits every E46 body style (320i, 323i and 325i, 1999–2006), with the M52, M54 or M56 engines — and the European-market versions.
BMW draws it on 5 diagrams, among them Front Body Bracket (41_1486) and Front Body Bracket (41_1712). BMW's catalog calls for two of these at each place it is fitted. It weighs about 20 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.
