I was reading a Reddit sub and found a Redditor that supposedly works for AutoZone and states that he knows who manufactures parts for all of their store brands. I was curious to find out who makes new Duralast alternators as I bought one today after my new Napa decided to die after exactly 4 years and 15k miles (the truck doesn’t get driven much). I was surprised to see that Remy possibly builds them for the Duralast Gold line.