Aluminium double pipe — a genuine BMW part, number 64 11 8 372 774. The number stamped on the part is 64118372774; BMW's catalog files it under the short number 8372774. You will find it on our AC & Climate Control shelf, under Other Heater and Air Conditioning parts.
It fits the E46 sedan, coupe, touring and compact (320i, 323i and 328i, 1999–2005), with the M52 engine — and the European-market versions.
BMW draws it on 2 diagrams, among them Heater radiator Behr (64_0814) and Heater radiator Behr (64_0993). It weighs about 134 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.
