This is an Factory original to the car alternator.

Pulled from an 2005 Audi A6 Quattro 3.2

Pulled due to squeaking - had it tested, found out the clutch pulley was bad.

Valeo Alternator
06E 903 016 K
180Amp
w/ 6 Poly Groove Clutch Pulley

http://columbus.craigslist.org/pts/5520067880.html