Outlet pipe — a genuine BMW part, number 16 13 6 757 520. The number stamped on the part is 16136757520; BMW's catalog files it under the short number 6757520. You will find it on our Fuel System shelf, under Ventilation, emission monitoring.
It fits the E46 sedan, coupe, convertible and touring (318d, 320d and 330d, 1998–2004), with the M47, M47N, M57 or M57N engines.
BMW draws it on the Fuel Tank/Attaching Parts (16_0372) diagram. It weighs about 9 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.