RockAuto does offer Motorcraft alternators and back in 2021, I purchased one for my 2016 5.0 Lariat.
When it comes to an Alt i would spend the extra dough for an OEM model like Motorcraft. Nothing wrong with Rock Auto. I always buy there.
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.
Dealer quoted me $557 for my 15 f150 alternator the other day. Found the same motorcraft alternator for $325-ish (+a $75 core charge). A little less painful. I share them same feelings as a couple other posters. Been burned by enough cheap-o remans over the years to skimp on certain parts.
Depends on if you want the cheapest store brand they make or OEM quality Motorcraft. I’ve gone through enough cheap alternators in my life that I only mess with OEM anymore.
If you don\u2019t have huge power requirements and are happy with the standard amperage then just grab an NA Z32 alternator from a wrecker and modify the tensioner bolt to suit.
If you can get motorcraft, that is my recommendation.
I went and purchased an OEM alternator from Nissan and it is still not providing power. I have triple checked all the connections on the alternator, and have verified they are running 12V when the engine is shut off.
So I go to get some iced coffee because Dunkin just came out with pumpkin and the car doesn't start. Sputters. So I call roadside assistance for a jump. They tell me it can't be jumped and it's probably my starter. Real kicker is I then call for a tow, tow guy shows up and jumps it???? So I HESITANTLY drive it to the dealer who determines it's a bad alternator.
It's a dice roll. I've had some success with them, but when I put a reman one in my Focus, it only lasted 2 weeks.
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