Had a bit of an alternator rigmarole lately when a recently fitted (~3 month old) genuine Audi alternator failed suddenly.
I won't bore you all with the lengthy details except to explain that, due to Audi bureaucracy/procedures, a shortage of time and the difficulty in finding another alternator, I ended up with another brand new alternator (fitted) and my faulty (nearly new) alternator repaired (at my own expense, despite being under warranty still).
Interestingly (and perhaps the reason a new alternator at a reasonable price was so hard to find), any search for the original alternator part number (077903015P) returns results for Lamborghini Gallardo alternators, which seem to sell for silly money on Ebay.
So, getting back to the alternator air guide ...
I'm not sure how important the air guide is but presently it isn't fitted. Despite having the correct part number, the new alternator has a slightly different design, with the air intake entering from below instead of the side, and there's no way to rotate it.
Looking at the parts catalogue, it seems there were two different designs of air guides, one of which appears to attach to the bottom of the alternator. However there seems to be no part numbers listed for these (on the online catalogue at least). Does anyone here have the part numbers?
Link to the relevant page is here:
http://www.realoem.me/Audi/RDW/A8Q/2.../903/903080#21
It looks like I need parts numbered 20 - 23 here:
