Denso alternator from RockAuto
 

Does anybody have experience with Denso alternators from Rock Auto?
More Information for DENSO 2100421

They are suspiciously cheap ($168) for a genuine Denso unit.

P.S. I know that rebuilding the original is the way to go, unfortunately my original is lost and I am stuck with an O'Reilly's alternator that works but keeps the warning light illuminated.

It says so right on the page: "REMAN"

It is not a new unit.

No experience with that specific alternator, sorry. However, if it turned out that the 'Denso" from Rock Auto and the unit from O'Reilly were rebuilt by the same company I wouldn't be the least bit surprised. I'm pretty well convinced that 'brand name' means almost nothing these days. Label-engineering is the name of the game.

Cheers
DD

I had picked up a reman that was built to 200 amp. I posted the info on here on another post. About 4000 miles so far no issues

Got mine from AutoZone. Been about 8k miles ago and trouble free so far.

I purchased a used OEM on line for $65 that had less than 50k of use. It has worked great for 6,000 miles. While your in the area, check out your serpentine belt. Use a breaker bar and a 15mm socket and you do not have to deal with the lack of space. One word or caution, the upper mounting bolt on the alternator goes in from the rear. If you put it in from the front, it will work its way out and eat up the serpentine belt. Yes, I did it!!!

Thanks for the input guys!
I think I'll just go with an OEM alternator from a junkyard. Given how sensitive the voltage sense for the light appears to be, I'd rather not risk with a potentially improper rebuilt.

who will you have rebuild it? Once rebuilt why do you think it will be better then a non-eom rebuild?

Well most starter and alternator shops use quality parts as they know that the customer will be back if they don't. Most "factory rebuilding" including what you say is OEM rebuild is done in the 3rd world using inferior electronics and copper with the mentality that you won't see them when it fails so they don't care. It is simply a numbers game and the profit is great to if they sell you crap.

At least if you get your own core rebuilt at a shop you know where the core originated. They still may and likely do use parts made overseas. The parts are so Cheap and labor minimal that they will risk having to do a redo to maximize profit.

That being said the alternator is pretty easy to swap in and out. Im happy with my 200 amp. So far so good. And chances are it has crappy parts in it. If I ever came across a new OEM alternator at a decent price Id pick it up. Otherwise its a crapshoot.

huh?

considering that there are no domestic made parts it is certain that any replaced parts will be from overseas

the original alternator is wholly manufactured overseas with no domestic parts whatsoever