My Suburban had 213,500ish miles on it when the alternator died while we were on vacation, pulling our Toy Hauler trailer.
I bought it 2 years ago with 211,ish on it, and no records. so, OEM? maybe, or not.
the replacement is a DuraLast guaranteed for the life of the mechanic that wants to keep changing it if it fails again
My 2002 1800 had 98,000 on it when I just arbitrarily ordered up a new OEM Honda for that year model. in retrospect, wish I had thought on that more, and got a later year model for the higher ampacity rating.... but as I hear, that might be best that I did not?