This is a genuine BMW ring, part number 13 54 1 435 626. The number stamped on the part is 13541435626; BMW's catalog files it under the short number 1435626. You will find it on our Air Intake shelf, under Throttle valve and operation.
It fits the E46 sedan, coupe, convertible and touring (320i, 323i, 325i and 328i, 1999–2006), with the M52 or M54 engines — and the European-market versions.
BMW draws it on 4 diagrams, among them Mass air flow sensor (13_0643) and Hot-film air mass meter (13_0905). It weighs about 30 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.
