From my experience with replacing Honda alternators, I always go OEM.
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.
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.
Always buy ac delco OEM alternators not part store crap.
You need one specifically made for your vehicle, but you can shop around on different sites, for different brands to find one that meets your budget. I prefer ones from the OEM (ie Honda), Bosch, or Denso.
But its a Ford truck/suv and the alternators ALWAYS go bad on them. Word to the wise, buy an AC Delco replacement or Ford OEM, anything else will just die again-they always do.
Between the two that I've owned, I have way over 250k miles in 'em and they are awesome vehicles. Maintenance has been very reasonable although we just had to put a new alternator in the one we have now.
Another good way to tell your alternator is going is the battery light illumination. I noticed as I drove to higher RPM's, used the vents or even used windows with more power gave more illumination of the battery light. Tested the alternator at a shop and found it to be weak, battery was fine.
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