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SR Performance Alternator; 130 Amp (05-08 GT)

Item 100608
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      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 2005 to 2008 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 2005-2008 GT Mustang. The stock belt can be used on original equipment vehicles.

      SR Performance

      Fitment: 2005 2006 2007 2008

      SR Performance 100608

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Alternator

      Tech Specs


      Customer Reviews (57)

      Write a Review

      Ratings Summary

      4.4 out of 5 overall rating from 57 customers

      Installation Time: Less than 1 Hour

      • May 05, 2020

        5 2006 GT - Reo


        Works well. Easy to install. Gives good voltage and looks great.

        Helpful (0)
      • April 10, 2020

        5 2008 GT - Joseph Installation Time: Less than 1 Hour

        Ride the lightning

        Had a occasional battery light. Eliminated all other possibilities came back to the Alternator that was installed 2 years ago under warrenty. Opted to upgrade in both amperage and build quality. No more battery light. Don't take a chance with part store remanufactured junk... pay a few bucks more and have peace of mind.

        Helpful (3)
      • August 20, 2019

        5 2005 GT - Kyle05GT Installation Time: Afternoon

        SR Performance Alternator

        Good value. Easy to install. Basic tools and ability required. I chose to upgrade my throttle body to the SR Performance twin 62mm at the same time. Had done very quickly and rest if car put together in no time really.

        Helpful (3)
      • March 06, 2019

        4 2005 GT - Kelvin Installation Time: Less than 1 Hour

        Great Alternator

        This alternator gave me the amps i needed over the OEM one and is working well with my supercharged 4.6l 3V DOB set up.

        Helpful (3)
      • January 20, 2019

        1 2007 GT - RayE Installation Time: Afternoon

        Do yourself a favor and get another brand...

        I bought one of these in June of 2016 for my 2007 GT. It lasted almost a year and then failed. AM was very good and replaced it though in April 2017. The first time it happened I got stuck and had to have the car towed and lost a day of work. I replaced it myself so I didn't have to pay a mechanic. However, i didn't have time to replace it this time and had to pay the mechanic to replace it. This second time I was getting a notification on my HUD for the failing alternator not charging my battery but I was able to get something else before it failed for the second time. So now I'm going to have to replace an alternator for the third time in less than 2 years! What a pain in the butt to say the least and I'm glad I can do the work myself or it would be costing me a small fortune in mechanic's fees.

        Helpful (4)
      • September 25, 2018

        5 2007 GT - JazminN Installation Time: Shop Install

        It's been a month

        Got it installed on my 07 Gt and so far so good. I'm kind of waiting for the 90 day trial phase I do on most car parts since I've had parts go out after 30 days even through my dealer. If it runs well I'll definitely recommend it to friends and family

        Helpful (4)
      • July 29, 2018

        5 2005 GT - Arnott Installation Time: Less than 1 Hour

        Great product

        Product was great, got in on in no time at all. Looks alot better than the original. The copper wire really stands out.

        Helpful (4)
      • May 19, 2018

        5 2006 GT - BeauS Installation Time: Less than 1 Hour

        very nice

        buy this product, very easy to install, works very very well

        Helpful (6)
      • January 31, 2018

        5 2007 GT - Crwdctrl86 Installation Time: Less than 1 Hour


        So far so good! Been in for a month, no problems. Easy install too! Thanks again AM!

        Helpful (6)
      • December 18, 2017

        1 2006 GT - Benjarony Installation Time: Less than 1 Hour


        The box showed up damaged, and the little black plastic cover on the pulley was broken. AM sent out another plastic cover real quick, which was cool. That was at the end of March 2017, now, mid December 2017, (about 4K miles) and the alternator is sparking and has melted a portion of the housing. For all I know, this is a result of the poor handling in shipping (or maybe it is from AM not putting it in another box with padding when they shipped it. It was shipped only the manufacturers box). Either way, this thing is junk. Pony up the extra for the PA Performance alternator and be done with it. AM would not refund or credit me for it because it is past the 30 day time frame, so they gave me a slight discount on a PA Alternator, which has a lifetime warranty (through the manufacturer, not AM) Overall very disappointed in this product, and AM's policy on defective parts; I feel that AM should stand behind the products they offer with a bit more integrity.

        Helpful (6)

      Questions & Answers (5 answers)

      5 Top Rated Questions

      I purchased this alternater on March 3, 2017 and having issues with it already! 11/4/17 is their no warranty after 30 days from manufacturer?

      • SR Performance does not hold a warranty on their products. If you do have an issue with this or any other product you purchase from us I would suggest to contact American Muscle Customer Service to see what they can do to help.

      Helpful (0)

      What is the warrenty on this item?

      • The SR Performance Alternator, would include a 30 day warranty.

      Helpful (0)

      Is power wire upgrade needed? Is this a direct plug and play swap? Will it work without upgrading the power wire? Also is this higher output than stock?

      • Yes this is a direct plug and play swap...not sure if you don't actually need the upgraded power wire...I did it anyways just in case. Also yes this is higher output...stock is 135 amps, this one is 150.

      Helpful (0) Show 1 more answer

      Performance Alternators Can I use my original clutch pulley on these alternators?

      • Using your original clutch pulley with the SR Performance Alternator - 130 Amp (05-08 GT) should not be a problem.

      Helpful (0)

      Clutch ? Does this altenator have the clutch like the factory altenator ?

      • In respect of your question, I have just fitted the alternator straight from the box into my 2006 Mustang GT based in the UK. It took me 35 minutes, and so far having done 40 miles in traffic and fast roads 80mph, I can report it seems to work fine. No additional parts required!

      Helpful (0)
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