Alternator Bosch or OEM Nissan

After that I would pick the Bosch reman. A junk new alternator is going to last a fraction of the time of these 2.

The Bosch reman is the one I'd go for. I've got it in mine.

Z1 Offroad has an OEM Nissan remanufactured for a good price, that's I what I went with.

Fcp euro, Bosch alternator for less than $400 including core charge, free shipping. Lifetime replacement. Believe it’s 5% off 250+ currently as well. Bosch is the OE supplier, no aftermarket concerns.

I ended up getting a new Bosch AL49X from Bavarian Autosport (back in the day). IIRC, I needed to purchase a new pulley and fan since the old ones were Valeo and incompatible with Bosch. I sort of remember also needing a different / non-standard belt length.

Most of my experience is from the Infiniti side of the family, but I replaced an alternator on all my higher mileage vehicles. In general, the diode packs in Nissan alternators go out after about 150k miles or so.

I tried to correct with a new and proper group size battery - it had an OE 140A Bosch alternator and starter with a 2016 El Cheapo battery that was one group size too small so I replaced the H5 with a new H6 group and all was good for a few days... I also replaced the starter just because I like to spend $ and wanted a clean slate as this a vehicle I intend to keep and drive daily as needed. The new battery/starter work great but I noticed right away that the voltage while at idle was now almost a full 2 volts lower than before changing any of the afore mentioned parts. I have a P3 dash vent gage that reads to 0.1V and I use a VOM plus VCDS so I know the P3 reads OK. Before changing any parts the P3 read 13.5 to 14.4 volts steady depending upon what accessories were on. After the H6 battery the P3 read 11.5 to 12.5 volts under the same driving conditions. I tried to get the OE alternator bench tested but that did not work so I just went with a new reman Bosch unit. No change in voltage with the new alt... So this past weekend the motor fired up just fine and the dash vent P3 gage display was 12.5V but while driving around town running errands the voltage kept dropping all the way down to 9.0V which caused the DSG to lock and basically leave me stranded miles from home. I will try to get the entire electrical system load tested this weekend but for now I just keep a tender on the batter at night as I do not drive much during the week nor do I commute. The tender keeps the battery at 13.0V reliably.

I just bought this car and I was about to replace the alternator belt but realized it’s not aligned. From this prospective the alternator is too far to the right

I ended up replacing the alternator but it wasn\u2019t a genuine Nissan part and it didn\u2019t work.

Ive had a few Bosch reman failures lately at my shop as well, although they were for N52s, all bearing noise after about a year.