Alternator OEM KIA or Bosch

90% is the alternator: get a reman Bosch. The "squeaky serpentine belt" is actually the bearings inside the alternator on their last legs.

We had a warranty and it paid to have the alternator and starter replaced and I only had to pay the $150 deductible.

Check alternator voltage should be above 14V at 1500 RPM. Bosch alternators are crap anymore, I bought a new WAI global alternator, it has strong output so far. Only time will tell if it holds up.

I installed a Bosch re-manufactured unit. Under $200. It has a 24 month warranty and roadside assistance included.

Aftermarket units from Bosch and other are about $300.

The most expensive one at Rock is a Bosch for $186.79+ core.

It’s either Bosch or Valeo.

Bought a new bosch alternator and installed it.

Everything went well, or so we thought, as he turned on the car it started to slowly smoke. I assume that the ac compressor plug got shorted or was loosely plug bc it was the hardest thing to replug and the fact the ac isn’t blowing cold air anymore. We recharged the battery to 12.4-12.5 v. The alternator was only pulling 13.3-13.7 v with load and without load. Mind you this was a new OES Bosch alternator.

Unfortunately it’s proprietary Hyundai/Kia part. It’s now a common problem that if the alternator goes, so does the transmission because the low voltage fries the shift control solenoid. Lots of people complaining about this and yes, it happened to me.