Reviews of OEM Hyundai alternator

very recently the alternator gave up that too after 3L.

It starts out with flickering headlights and internal lights, the check engine light pops on, and sometimes it will idle rough when this is happening and sometimes even pop out of gear. I had a warranty and the dealership kept insisting it was the alternator, to the point they changed it 3 times! They even put in an OEM alternator and changed my transmission. They had my car for MONTHS. They had a Hyundai roadside mechanic on a Zoom call and figured out it was a ground. It drove fine for a couple years, and then the same things started happening. But this time, it even went in lame mode at one point. Had to put something in the shifter to unlock it and drive it, but no turn signals or windows or anything else would work. Just last week, a new battery and ground strap were installed. And the only codes it was throwing were for a bad battery, before it was changed. And she was driving great! I hit a bump yesterday, and it all started all over again. Flickering lights, idling rough, and check engine light came on.

Hyundai's and Kia's absolutely do not play nice with aftermarket alternators such as Napa and Autozone. I tried them both and they failed within days (Napa was about 1 week) I finally installed the Hyundai/Kia part and it has been fine since.