Heater inlet pipe — a genuine BMW part, number 11 53 1 705 210. The number stamped on the part is 11531705210; BMW's catalog files it under the short number 1705210. You will find it on our Engine shelf, under Thermostat and coolant lines.
It fits every E46 body style (320i, 323i, 325i, 328i and 330i, 1999–2006), with the M52, M54 or M56 engines — and the European-market versions.
BMW draws it on 7 diagrams, among them Cooling System Water Hoses (11_2200) and Cooling System Water Hoses (11_2343). It weighs about 220 g (0.5 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
