• Brand New, Not Remanufactured Alternator
  • No core charge
  • Replaces dealer part numbers: 1R3U10300AC, 1R3UAC, GL449RM
  • Direct replacement
  • Built to strict quality control standards
  • Fits models with V6 3.8L Engine

Fit guaranteed

  • This NEW alternator will install just as your original does.
  • Designed to fit your original engine brackets.
  • Your existing wiring harness will attach with no modification.


    • This Alternator will give you trouble free performance
    • Each unit is individually tested.
      • You'll receive a report with your alternator that shows its performance.
      • Example (pdf)
  • New vs. Remanufactured
    • Nothing is more frustrating than pulling off the side of the road with a failed alternator. That is why we carry only new alternators which are more reliable than remanufactured alternators.
    • Our Alternators are 100% NEW. Castings, pulleys, fans, hardware, internal parts, etc. are all new.
    • No Core Charge; No hassling with an old core
This replacement alternator is just what you need to get your vehicle in good working order again. If your battery is no longer being charged completely, or at all, this alternator may be the solution for you.

Returns Note:

Our electrical and electronic parts are subject to strict quality control testing.  Once the item has been installed or plugged in, it is no longer eligible for a refund.  The item may be eligible for replacement, only if it is found to have a manufacturing defect. Before purchasing, please ensure proper diagnosis of the failed original part is performed.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

5.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
mustang alternator
works fine and i would highly recommend to all.Perfect fit and excellent price.
July 9, 2018
1 month ago
It fixed my problem
My Mustang alternator died, causing my car to shut off. 1A Auto had the match and shipped it quickly arriving in a few days. It was a perfect fit and easy installation. Turned the key, car started as normal, problem solved, happy customer.

Thank you guys once again for a good product at a very good price with excellent service.
June 26, 2017
1 year ago
Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!

Vehicle Fit

  • 2001-2004 Ford Mustang 130 Amp Alternator V6 3.8L

This part replaces:

  • OE # 1R3U10300AC
  • OE # 1R3UAC
  • OE # GL449RM
  • Hollander 601-00916
  • Lester 8266
  • TYC 2-08266
Part #: 1AEAL00422

Order must be placed by 4pm ET