Remy 12858 alternator for the 2011-2012 Ford Explorer V6 3.5L and other vehicles charges the battery and powers the electrical system while the engine runs. This is a remanufactured Remy alternator, designed for dependable service over the life of the vehicle.
Dim headlights, a battery warning light or a battery that keeps going flat can mean the alternator is worn, though a weak battery or a slipping drive belt can be behind those same signs.
It is also an alternator for the 2011-2013 Ford Edge V6 3.7L and the 2010-2012 Ford Taurus V6 3.5L, among many vehicles it fits.
Fit and size
Build and materials
One remanufactured alternator with its pulley. This listing holds one alternator, and the car takes one.
Interchange: 8A4T-10300-AC · 8A4Z-10346-A
A3TX0091
This part cross-references / interchanges with the following part numbers:
Is this the right Ford Explorer alternator for a 2011-2012 V6 3.5L?
Yes, Remy 12858 fits the 2011-2012 Ford Explorer V6 3.5L, and also the 2011-2013 Ford Edge V6 3.7L and the 2010-2012 Ford Taurus V6 3.5L. For another car, look in the "Vehicles it fits" section.
Does the Remy 12858 alternator come with the pulley?
Yes, Remy 12858 is one remanufactured alternator with its pulley included.
How many amps is the Remy 12858 alternator rated for?
This alternator is rated at 175 amps on a 12-volt DC system. It has an internal regulator and an internal fan, and it turns clockwise (right).
What can a whining noise or flickering lights mean on an older alternator?
A whine or grinding noise from the engine bay, or flickering lights, can be signs of a worn alternator. A shop can run a charging-system test, which needs the engine running.
Does the Remy 12858 alternator replace number 8A4T-10300-AC?
Yes. 8A4T-10300-AC is one of the numbers this alternator replaces, along with 8A4Z-10346-A and A3TX0091.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
