Pressure regulator solenoid valve — a genuine BMW part, number 24 35 1 423 627. The number stamped on the part is 24351423627; BMW's catalog files it under the short number 1423627. You will find it on our Transmission shelf, under Other Automatic transmission parts.
It fits every E36 body style (318i, 318ti, 323i and 328i, 1992–1999), with the M43, M44 or M52 engines — and the European-market versions. It also fits the E46 sedan (316i 1.9 and 318i, 1997–2001), with the M43 engine.
BMW draws it on 3 diagrams, among them A4S 270R/310R solenoid valve/cable set (24_0804) and A4S 270R/310R solenoid valve/cable set (24_1585). It weighs about 141 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.