Alternator OEM FORD or Bosch

I bought a Bosch alternator at O’Reilly’s for ~ $300 and the gaskets at Autozone for ~ $100 (you can get them cheaper but I needed them quickly)

I would use the BOSCH from fcpeuro.com without hesitation.

I replaced my alternator two years ago, and I put in a Bosch, and I haven't looked back. It works great and also has a warranty.

Best has been new Bosch or Delco-Romy from jobber stores. Never had one of those fail yet.

I think I put a Bosch 145 on my 01 5.3 and it’s been a non issue

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

Looks very similar to a Porsche 944 alternator.

I own the exact car, when I bought it, it came with a bad replacement alternator. The replacement was an eBay brand which was causing all sorts of faults. I replaced it with a Bosch unit and the car seemed fine. A few weeks after the replacement, I started getting a random limp mode with various under and over voltage errors. At this point I decided to buy and install a BMW branded alternator. This took care of issue.

My neighbor had a Ford mustang and he had to jump start it about once a week. I checked the alternator and it had power when the car was off. Bad diode.

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.