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25% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ30 in Cart.

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25% Off Select Parts and Accessories
Receive 25% Off Your Online or In-Store Purchase. Use promotional code MMJ25 at checkout to receive discount. Not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs. Excludes the following brands: Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner and BBK Performance. Valid online until 2:59 am EST on 5/1/17.

Free Shipping on Orders Over $50 or in-store pickup

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  • Part #: 13889N|
  • SKU: 519520

4 days after 6 p.m.

    • A 100% new product, each unit is manufactured at a TS16949 certified facility to stand up to the industry's toughest automotive standard
    • Designed with qualified components that must meet specific rigorous test specifications
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ProStart Platinum New Alternator

100% new inside and out, ProStart Platinum Alternators are designed with all applicable revisions and improvements to the OE design, often making it better than the original part.
  • A 100% new product, each unit is manufactured at a TS16949 certified facility to stand up to the industry's toughest automotive standard
  • Designed with qualified components that must meet specific rigorous test specifications
  • All applicable revisions are incorporated into the new unit, often making ProStart Platinum a better choice than an OE replacement
  • Before leaving the factory, every new alternator is tested and must pass OE performance specifications
  • Attention to detail ensures consistent quality units, that result in reliable service every time
  • Each new ProStart Platinum alternator is backed with a limited lifetime warranty
  • Your alternator plays a critical role in your car, keeping your car battery charged and your electrical systems working correctly
  • To keep your car or truck running safely, check out our wide assortment of car batteries, starters, and alternators and related parts
  • The Pep Boys Say: "ProStart Platinum alternators have all the improvements to the original OE design built in and they are 100% new, an unbeatable combination."

Regulator Plug Clocking Position:
10:30 O'clock
11 pounds
Fan Location:
Amperage Rating:
90 A
Voltage Regulation Type:
Pulley Type:
5 groove serpentine pulley
Vehicle System Voltage:


ProStart Platinum New Alternator is rated 4.5 out of 5 by 46.
Rated 5 out of 5 by from Fits perfectly No problems installing the alternator. Alternator arrived in box with extra packaging around the normal alternator box to protect from shipping damage. Much appreciated.
Date published: 2013-12-29
Rated 5 out of 5 by from Good alternator Replaced it. Initially was leery of the quality but so far (fingers crossed) after about 2 weeks car is working like a charm. A real pain to replace because of compact spacing. Check battery voltage after installation and everything seem to work as it should. Was afraid of fit but all the mating points measured per original alternator. Good general installation instructions. Good buy! Also pepboys has loaner tools so facilitate belt removal.
Date published: 2013-10-28
Rated 5 out of 5 by from Perfect Fit Looked great out of the box and a perfect match to the original part. Easy to install and fit like a glove...
Date published: 2013-09-02
Rated 5 out of 5 by from Fit Perfect It is GREAT just wish it was 200 AMP
Date published: 2013-08-16
Rated 1 out of 5 by from Not satisfied I purchased this product back in May, and just 3 months later its been check to be a bad alternator. i'm am not a pleased customer.
Date published: 2013-08-12
Rated 5 out of 5 by from easy install This alternator was very easy to install. I am not much of a mechanic but after looking at installation examples on you tube, my son and I successfully installed the part in 45 minutes.
Date published: 2013-07-19
Rated 5 out of 5 by from Great alternator and great service! This alternator works perfectly, has a lifetime warranty and was easy to install -I ordered online for store pickup and the customer service was great - I would recommend buying this from PEPBOYS.
Date published: 2013-03-26
Rated 5 out of 5 by from Good Replacement Works well so far, seems to be well built and bolted up perfectly, even included the mounting hole for a wire loom that passes by.
Date published: 2013-02-23
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