RockAuto does offer Motorcraft alternators and back in 2021, I purchased one for my 2016 5.0 Lariat.
Reviews of Motorcraft parts For Business
USA
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.
Frustrated got OEM (motorcraft) at the stealership for $44 for the pair went on in 5 seconds each, wondered if I was doing something wrong so easy.
Make sure you use the motorcraft thermostat.
Go with the Motorcraft thermostat as it has a rubber seal on the outside edge.
For 7 years i’ve religiously used motorcraft 5w-30 and motorcraft oil filters in my ‘97 crown vic lx and it’s been great
I ran motorcraft for like 70,000km's and switched to amsoil 5w50 after that.
Modern Ford engines tend to work best with Motorcraft or NGK spark plugs.
Only use OEM intake manifolds on these 4.6 motors. Aftermarket ones arent as efficient and the gaskets they use are often uneven and ive seen too many people have to redo the job months later as its leaking due to a poor seal.
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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