Update: There was a direct short in the alternator and when it shorted internally it also took out the 200 amp protection fuse ($115) too for the battery. I got a new Bosch unit and I was happy to find out I did not have to bring it to the nearest dealership and that a local German repair shop were able to do it.
The 07K 2.5l came with either a 140A Valeo or 140A Bosch alternator. Be sure you're buying based on alternator brand.
I recently purchased a 120 amp (refurbished) Bosch alternator at Advance Auto and kept the receipt. My original 90 amp alternator lasted 14 years before it stopped charging battery.
250,000 KM and still on the original alternator ( 1998 Audi A4 . Bosch 120 Amp Alternator ) . Had to replace a couple of bearings but that's it.
Alternators can be rebuilt. YMMV of course, but I rebuilt the Bosch alternator on my old Mk1 VW Rabbit several times (brush would wear down) with no issues.
I replaced it with a Duralast Gold. After replacing the issue still existed so I replaced the alternator with an OEM Bosch remanufactured unit.
My Lucas 18ACR (43 Amp) died shortly after I installed a big electric fan (I moved to Texas and felt it was a good idea), so decided to go with a higher output Bosch. I got tired of searching the parts shops (Advance Auto etc.) for a reconditioned Bosch that might or might not fit... In the end, I took my Lucas to an alternator shop and asked for a Bosch that would fit without modifications.
I am pretty sure that the 120A-Vr is much like all of the later Bosch alts with internal cooling. I just took my 120A 1.8t one apart and it is a PITA.
okay just did mine 14.7x after a cold start...can it be too much ? does that sound reasonble
Ok so I exchanged the alternator but just got it on this morning and the alternator i exchanged it with was a bosch which is a direct replacement of the original one i have, i hooked it all back up properly, new charge wire and its running at 11.4 volts now and still drops lol.
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