2.7 alt.
Not sure how you are determining the alternator is fried, but if the car is driveable I suggest you take it to an AutoZone (or equivalent) for a free charging system test. If your battery loses a cell, you'll have starting problems. If you need a new alternator, do some google searches for re-manufactured part. An OEM alternator from Audi is about $600 and you can buy rebuilts for ~ $200. I put one in at 75k miles, 63k ago.



