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SR Performance Alternator; 130 Amp (99-04 GT)

Item 100609
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      Review & Installation Video

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • 6G Series Alternator
      • 100% New! - Never Rebuilt
      • Direct Fit Replacement
      • 130 Advertised Amperage
      • 12 Volt Compatibility
      • Fits 1999 to 2004 GT Mustangs


      100% New. This SR Performance 130 Amp Mustang Alternator is 100% brand new, not re-manufactured like other companies sell and is fully tested at the time of assembly. It comes complete with internal voltage regulator and 6 groove pulley. The 130 Amp alternator will increase the charging capacity at all RPM Ranges with no modifications required.

      More Power. The SR Performance Alternator produces 65 amps at idle (1750 alternator shaft RPM), and 130 amps at maximum.

      Peace of Mind. Why waste your time and money rebuilding your alternator again and again when it will only fail, replace it with a brand new high performance alternator from SR Performance for peace of mind.

      Application. The SR Performance 6G Series Alternator is a direct fit replacement with no mounting bracket modifications required to be installed in a 1999-2004 GT Mustang. The stock belt can be used on original equipment vehicles.

      SR Performance

      Fitment: 1999 2000 2001 2002 2003 2004 Details

      MPN# 100609

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (100+)

      Write a Review

      Ratings Summary

      4.5 out of 5 overall rating from 100+ customers

      Installation Time: Less than 1 Hour

      Installation Cost: 0-$100

      • March 15, 2020

        5 2003 GT - Rob Installation Time: Less than 1 Hour

        Perfect fit, easy install.

        I recieved the alternator faster than expected. Easy installation. Thank you American Muscle!

        Helpful (0)
      • March 08, 2020

        5 2003 GT - Shane Installation Time: Less than 1 Hour

        Looks and works great.

        My old alternator was just starting to die off. After checking into all different brands, this one was one of the most inexpensive. I put it in and it works perfectly.

        Helpful (0)
      • March 01, 2020

        5 2002 GT - LeeR Installation Time: Less than 1 Hour

        Roaring GT

        The new alternator seemed to be a perfect fit and is working out fine

        Helpful (0)
      • November 07, 2019

        4 2003 GT - DonaldE Installation Time: Less than 1 Hour

        My new alternator

        I install this product on my 03mustang about three weeks ago so far I am very satisfied with it.

        Helpful (0)
      • November 07, 2019

        1 2004 GT - REC2FYME Installation Time: Less than 1 Hour

        Alternator replacement?

        The alternator has never worked with my car. Bench tested good at shop, but doesn't charge on vehicle. My 04GT came with a 2pin alternator connector for the regulator, this one has three and for some reason doesn't pick up the exciter to make it charge. Hope you have better luck than me. Because it test good on the bench you won't be able to return it. Makes a good paper weight or door stopper.

        Helpful (0)
      • October 22, 2019

        5 1999 GT - 865Mustang Installation Time: Less than 1 Hour

        American Muscle Best Place to Shop

        10/10 easy install, performs like it should, bullet proof

        Helpful (0)
      • October 06, 2019

        5 2002 GT - Andy Installation Time: Less than 1 Hour

        Good choice!

        Best price considering the other options. Solved my issue with backfiring on a cold start. Since mine was 18 years old and most likely on its way out, I just went ahead and replaced it. The video was helpful, and with a few tools, had it done in no time. If you decide to attempt it yourself, check and recheck the belt and make sure it’s right.

        Helpful (0)
      • September 06, 2019

        4 2004 GT - Chalie Installation Time: Less than 1 Hour

        Quick and easy

        Me and a friend took out the old one and placed the new one in about 45min

        Helpful (0)
      • September 02, 2019

        1 2004 GT - Mark Installation Time: Less than 1 Hour

        Seized Alternator

        This was my first order with American Muscle. I installed this and it seized after the second car start to my chagrin. It made a strange clicking noise that sounded like the bearings were bad to begin with. now i have to go through the whole return process.

        Helpful (0)
      • September 01, 2019

        1 2004 GT - Bcompton83

        Already locked up

        Bought this alternator to try out because it was a good price, but I’d recommend you spend the extra cash and get a better brand. This alternator locked up, and they don’t have any type of warranty, so now I have to buy another. Stay away from this alternator.

        Helpful (3)

      Questions & Answers (12 answers)

      5 Top Rated Questions

      How about warranty?

      • The SR Performance Alternator would not have a warranty on this product. However, if you have any issues please give us a call in!

      Helpful (9)

      Will this amp be able to supply enough power to keep up with the Mach 1000 sound system in my 2003 gt?

      • The SR Performance Alternator will output a maximum of 130 amps, 20 amps more than the OEM Alternator's 110 amp maximum output. This will be more than enough to keep up with the Mach1000 stereo.

      Helpful (2)

      Hello dear do you have international shopping ? Saudi Arabia

      • We do not ship internationally.

      Helpful (0)

      do i need to replace the power wire with this since it puts out 20 more amps than the stock alternator?

      • lt is not necessary to replace the power wire when installing this alternator.

      Helpful (0)

      My alternator was blowing fuse cause it was outputting too much power will this one do the same it’s for a 2000 mustang gt

      • The SR Performance Alternator will peak at 130a output. This should not blow the stock fuse.

      Helpful (0)
      Post Your Question
      7 More Questions
      Just out of curiosity, with this 130 amp alternator, will I lose gain when the a/c is on ? 1 answer
      Will this fit my 99 cobra? 1 answer
      Would I need to upgrade the power cable for this alternator? Emphasis on NEED! Thank you! 1 answer
      Does this alternator fit on a 01 v6 mustang 1 answer
      Will this fit 2003 Saleen Mustang 281sc convt? 1 answer
      Does this alternator have any warranty? 2 answers
      does this give you any hp and torque boost?? 2 answers

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Alternator

      Tech Specs

      Will It Fit My Mustang

      • GT - 99, 00, 01, 02, 03, 04

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