Nissan offered me around the same price for my 370z alternator replacement. I went to eBay and bout a used oem alternator from a rear ended total z with 3k miles on it for 80 bucks and changed it myself
I'm selling a GM alternator, mount, pulley, and plug. It's the Duralast Gold Delco 12 SI 94amp, just warrantied it. Hasn't been on a vehicle.
I just purchased a 180amp Duralast New for my X about 2 months ago. The Duralast has done me well so far.
I replaced mine with a Nissan Quest alternator works pretty well and is cheaper with a higher current output there is a write up in the forums for it
Got another Duralast/Autozone alternator in and this one seems to be working for now.
I bought a Duralast for my ‘99 E55 a few years ago. It didn’t work so I pulled the rectifier off of it, put it on the original one, which put out at 14.2 v back in the car. I returned the Duralast one after I made the old rectifier look like new. The shaft rotation on the Duralast felt gritty, too.
Duralast = Duramightlast. They're just overpriced cheap rebuilt cores.
All I could recommend is stop buying the autozone/duralast alternators. Buy a good brand, ie Denso, Delco, Motorcraft, etc. and return the duralast one outright for cash in hand.
Duralast..... if you want to get really good at changing them.
I went through 5 of those Durlast gold alternators (supposedly the best version of autozone's stuff) in 2 years before I had enough and bought a the Denso.
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