Genuine BMW part 24 32 1 423 988: Pressure regulator, main pressure. The number stamped on the part is 24321423988; BMW's catalog files it under the short number 1423988. You will find it on our Transmission shelf, under Other Automatic transmission parts. It supersedes the older number 1423601, so a part carrying that number is the same part.
It fits every E46 body style (320i, 323i, 325i, 328i and 330i, 1999–2006), with the M52 or M54 engines — and the European-market versions.
BMW draws it on 3 diagrams, among them A5S360R/390R ctrl unit with mount.parts (24_0938) and A4S200R control unit with mounting parts (24_0978). It weighs about 157 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.
