Guide shield — a genuine BMW part, number 11 31 7 506 365. The number stamped on the part is 11317506365; BMW's catalog files it under the short number 7506365. You will find it on our Engine shelf, under CAMSHAFT.
It fits every E46 body style (316i, 316ti, 318i and 318ti, 2001–2004), with the N42 or N46 engines.
BMW draws it on 2 diagrams, among them Timing and valve train-timing chain (11_3189) and Repair kit, open timing chain, top (11_6604). It weighs about 10 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.