Personally the AcDelco would be my top choice here with these options going new and not a reman.
Pros: top choice, new
Owner reviews for alternator
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The Bosch reman is the one I'd go for. I've got it in mine.
Pros: Bosch reman good
Vehicle:
BMW
I had to buy a replacement remanufactured alternator (Valeo 120A one) and it was a straight replacement that solved the problem.
Pros: straight replacement, solved problem
Get the Denso from Rockauto, or NAPA should carry them local to you. It's a total PITA to get to, I don't care what kind of warranty autozone provides because it's not paying for my time.
Cons: total PITA to get to
Vehicle:
Honda Odyssey
Part number: 2100575
I have yet to replace an alternator, but every recommendation I have seen is for Denso.
Pros: recommended brand
When I had a 98' Maxima and the alternator went out, I bought a remanufactured Hitachi on eBay and that one worked just fine for many years.
Pros: worked fine for years
Vehicle:
Nissan Maxima
If those are your only options you're gonna go with, Remy or ACDELCO. Keep in mind the ACDELCO is not made by ACDELCO and is just rebranded. But has a warranty and decent support.
Pros: warranty, decent support
I replaced the battery, and upgraded to an AGM battery while I was at it. The problem still wasn’t solved though.
Pros: upgraded to AGM
Cons: problem not solved
Vehicle:
Volkswagen Corrado
Duralast..... if you want to get really good at changing them.
Cons: changing them
I was driving the Mini when the engine began to struggle at idle and then shut off, refusing to restart. The starter engaged but hit a wall of resistance. After getting it home, I found the alternator was completely stuck. The one I replaced was a Bosch. Its bearing had failed catastrophically, and the pulley would not move.
Cons: catastrophic bearing failure, engine seized
Vehicle:
MINI
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