I've come to the conclusion after reading much online that i need to replace the above on my 1.9TDI.
Now comes the difficult part, where do i find the part number i need? (had a look in the part number thread but couldn't see it). Plenty online but they vary quite a lot.
Will this one fit for example? AUDI A4 S3 TT 1.6 1.9 2.0 TDI ALTERNATOR CLUTCH PULLEY | eBay
Also does anyone have an instructions on how to replace this on an A4? i.e. do i need to remove most of the front end?
Thanks in advance for your help