Owner reviews for alternator

Yes, get a Denso reman from RockAuto for less than $200 after core.

Get the Suzuki Grant Vitara V6 105a by Denso. Bolts on and looks just like factory. Goes from lame 70a on the early t4r's to a 105a with this upgrade. Runs my stereo and accessories like it's nothing.

I went with a Denso reman and it’s been holding up fine for 12k miles.

If it is an original Denso, the best unit to use is the one that you have. It likely can be serviced with new brushes, rectifier, whatever. Do NOT use an original Denso as core for a cheap reman. A puppy dies every time someone does that. Those remans just do not last.

The OEM motorcraft alternator in my focus lasted 14 years and its replacement, a Remy, lasted 6. If the difference in price between OEM and aftermarket isn't too big, and you plan on keeping the car for more than 5 more yrs, I'd go with the OEM.

The alternator is $700, with today\u2019s pricing that\u2019s totally fair. Just checked with local parts suppliers, for a 2.5L Mazda 6, for a quality Denso unit, it\u2019s fucking $350 before markup, and the cheaper options are still over $200! You have to remove the intake for this job which requires new gaskets as well, so for $700 you\u2019re getting a good deal.

After that I would pick the Bosch reman. A junk new alternator is going to last a fraction of the time of these 2.

Duralast Gold = new manufacture. A new unit from China. Sometimes OK, but often crap.

I got this message when the mechanic replaced my alternator with a non-OEM unit that didn't have a voltage regulator.

Mine failed at 55k a couple of weeks ago. A couple months prior to this I had complained to the dealership and showed them all the reports of this issue online... At the time they denied any knowledge of the alternator issue.