Personally the AcDelco would be my top choice here with these options going new and not a reman.
Pros: top choice, new
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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
ACDELCO because if I get another API alternator that’s defective I’m going to kill somebody
Cons: defective alternator
I always get AC Delco from RockAuto... never had one bad out of the box... Can't really speak to any other brands.
Pros: never had bad experience
I\u2019ve had an ac delco alternator from rock auto in my Honda Fit for 7 years now.
Pros: ac delco alternator
Vehicle:
Honda Fit
On rock auto I see new alternators from ac delco. Not sure about any of those brands.
Vehicle:
Infiniti
Put an AC Delco alternator on my Celica because I couldn't get a Denso for it. Wasn't going to buy a store brand reman that'll die in 6 months.
Pros: better than store brand
Vehicle:
Toyota Celica
If it was me, I’d go with the ACDelco. Never had any issues with them so far. Checking for the best warranty is something else you might consider, just make sure to read that fine print closely.
Pros: no issues so far
The issue you can run into is most common vehicle alternators are light duty at best. Lets say its a 100 amp alt, don't pull more than 40 amps continuous. A great example is the AC Delco 10si alternator. Loads of cheap knock offs and copies of that alternator all claiming crazy high amperage but none list the duty cycle. The 10si frame is designed for 40 amps of power and the heat that creates. You might be able to get a little more cooling with a better fan but you won't get 100+ amps out of one.
Cons: light duty, low continuous amperage, not for high power
Always buy ac delco OEM alternators not part store crap.
Pros: OEM alternators
Cons: part store crap
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