Bosch has a support site that shows what alternators they recommend for your VIN number. AL20X (65A) and AL172X (65A) are the two Bosch shows. However most of us know the original was a 90A unit AL30X.
After getting mine rebuilt 3 times and still having the same problem, I ended up getting a Bosch factory rebuilt one. Cost-wise I don’t think it was significantly more than one rebuilt by a shonky auto electrician and in the long run would have been cheaper.
Mine was my alternator. Never had battery issues but once I replaced it with a new bosch all the electrical gremlins the car had went away.
Alternator wise, I'd definitely spend the money and acquire a nice Bosch unit to replace yours if you were gonna swap it.
What brand alternator did you use? If not OE, Bosch, or Valeo, change it again.
Step up and buy a Bosch. Yes, they do fail, but the odds are much less.
I want to replace the alternator myself, but I can't find where to get OEM parts for a reasonable price. The dealership is charging $340 for the part and the best I can find is this [Bosch alternator](https://www.amazon.com/dp/B001C64QHE/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&colid=TXMF4LHVIWCE&coliid=IN63F3OG0M77W) on Amazon which they state is new, but it seems like all Bosch alternators are remanufactured. Why is it so damn complicated to find high-quality replacement alternators?!
B5/5.5 alternators come from two vendors, Bosch and Valeo. I've heard they're not interchangeable because of different pulleys.
So I bought a new alternator off of Rock Auto that I was amazed that I had to re-use my old pulley? But when I went to put the pulley on, the nut stripped on the new alternator like instantly. The whole ordeal is trash
Good thing you got a Bosch instead of the duralast. I had a duralast alternator last about 2 weeks and when I was standing in line at AutoZone to return it and buy a real alternator, there was someone behind me also holding an alternator that lasted two weeks.
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