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PA Performance High Output Alternator; 200 Amp (05-08 GT)

Item 95320
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      Review & Installation Video

      Hey, Stephanie here breaking down the PA-Performance High Output Alternator for 2005-2008 Mustang GTs. PA-Performance is widely know for their high performance charging and starting systems. They have specialized in high output alternators for the Mustang for nearly a decade. And all of their units are 100% brand new and fully tested during production, unlike some other alternator options that are out there.Now this is a 200 amp 6G series alternator that comes complete with an internal voltage regulator and a pulley that allows you to reuse your factory belt. Although, I would recommend replacing your belt while you're in the area, since you're going to be replacing your alternator anyway. This is a direct replacement that increases the charging capacity at all rpm ranges without any modification necessary. Providing 100 amps of idle and 200 amps at max.Now I will say because this unit provides higher than stock output, you will need to upgrade your main power wire. This is because the stock OE power wire was not designed to handle the increase load that this high amp alternator provides. Luckily PA-Performance offers this upgrade and it's available in the drop-down menu on the product page. If you're not already there just click the link below and see what I'm talking about.For installation you can expect to spend about two hours tackling the job with the use of basic hand tools. Now because this is a direct replacement you do not have to modify the mounting bracket. But like I mentioned before, I would recommend installing a new belt while you're installing your new alternator.And if you have any questions about the install or the alternator, you can always reach out to a Mustang expert by phone or email at anytime. So if your alternator has failed or is on its way out, then be sure to check out this high output 100% brand new replacement from PA-Performance offered here at

      Product Information

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


      • 6G Series Alternator
      • 100% New Replacement
      • Includes Manufacturer One Year Warranty
      • High Output - Increases Charging Capacity
      • 100 Amps at Idle - 200 Amps at Maximum
      • Fits 2005 to 2008 GT Mustangs


      100% New. This 200 Amp Mustang Alternator is 100% Brand New, not re-manufactured like other companies sell and is tested at the time of assembly. It comes complete with internal voltage regulator and pulley. The 200 Amp alternator will increase the charging capacity at all RPM Ranges with no modifications required.

      More Power. The PA Performance Alternator produces 100+ amps at idle (2000 alternator shaft RPM), and 200+ amps at maximum (6000 alternator shaft RPM). It is required to upgrade the main power wire because this alternator has a higher output than stock. (See the drop down menu option above).

      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 altenator that includes a Limited One Year Warranty directly from PA Performance for peace of mind.

      Application. The PA Performance Alternator weighs in at 16.2 lbs and is a direct 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.

      Fitment: 2005 2006 2007 2008 Details

      MPN# 2158WHO

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (35)

      Write a Review

      Ratings Summary

      4.4 out of 5 overall rating from 35 customers

      • February 14, 2020

        5 2007 GT - EricM

        Easy Install

        Alternator is pretty easy to replace on a 05-09 GT... This fit perfectly and works perfectly. No complaints. (however, look for my review on the upgraded power cable, that's a bit more complicated)

        Helpful (0)
      • February 08, 2020

        1 2007 GT - Brody

        Bad voltage regulator brand new

        We swapped alternator and cable, and voltage regulator was bad. I was really looking forward to this, but after the money and wait, had to swap again with one from autozone after losing 120 bucks at shopdetermining voltage regulator in brand new alternator bad and was spiking the electronics. So out another 120, plus another later actor, and now shipping back for.a refund, but still put an extra 120. It should work brand new out of box. Unacceptable

        Helpful (0)
      • September 11, 2019

        5 2006 GT - ChrisL

        added assurance

        I recently upgraded my stereo/sound system in my mustang and I felt that the system would drain my battery and that the OEM alternator wouldn't give me the power I required/wanted. I ordered this alternator and the required wire (thicker gauged) and the install was a breeze. I can't say I notice a difference but I know I have a top end high quality alternator and battery to supply my energy needs.....

        Helpful (1)
      • September 09, 2019

        5 2005 GT - ToddN

        200 AMP

        Car systems failure due to failing alternator after adding new 350Watt speakers in my 2005 Mustang GT 4.6 3V as well as new high output coil packs. To much for the old alternator to keep up with so bought a high output 200 amp alternator and solved all my issues! Thanks AM

        Helpful (0)
      • March 09, 2019

        1 2005 GT - SergioG

        Broke after 1 week

        Bought this part installed it and it broke now I’m down 400 dollars

        Helpful (3)
      • February 19, 2019

        5 2006 GT - DanielH

        "Check Charging System"

        So far so good. Installing the PA Performance High Output Alternator - 200 Amp (05-08 GT) together with the PA Performance Premium Power Wire Kit has at this time, cured my "Check Charging System" warning.

        Helpful (0)
      • February 15, 2019

        5 2007 GT - RaymondC

        Well worth the money

        Because I have so many upgrades in my mustang it was showing check charge system put this alternator on and cleaned the throttle body its all good .

        Helpful (0)
      • February 09, 2019

        5 2006 GT - DavidT

        Check Charging System problem

        Happy to say after 3 starts and 40 miles no more "Check Charging System" so far. Easy install (Removed throttle body and cleaned which made it much easier). Only complaint is with the wire upgrade. Battery side of cable is 3 to 4 inches too short. To mount as normal the inline fuse box interfered with stock negative battery connection. Had to run to the left and in front of battery. Will rectify with longer 4 ga. soon to mount as it should be mounted. Not a big problem but shouldn't have happened with a $50.00 custom part. Overall happy that Baby is running smooth again. It is still early but I am totally satisfied so far. Coming back for more goodies soon.

        Helpful (0)
      • November 24, 2018

        5 2008 Bullitt - Greengrowler

        Great alternator upgrade

        After problems with OEM alternators the PA 200 Amp and cable really upgraded performance. Easy install and fixed my cold start problems. General runnability is much better too. My Bullitt has FFRP intake, hot rod cams, cam phase limiters, Steeda UDP's, stage 3 clutch, light racing flywheel, Kooks long tubes and WeaponX COPs.

        Helpful (1)
      • November 15, 2018

        5 2007 GT - PAULS

        great product

        up coil pack to higher output .went through 5 stock 130 alternator in 4 months hope this solves the problem. so far so good!

        Helpful (1)

      Questions & Answers (8 answers)

      5 Top Rated Questions

      What type of pulley does this alternator have - clutch or clutchless?

      • ThePA Performance High Output Alternator will have a clutchless pulley.

      Helpful (1)

      What diameter is the pulley on this alternator?

      I have a Paxton Novi 2200 SL supercharger and I am having problems with my alternator as it is not powerful enough to run all the extra electronics that come with the supercharger. Would upgrading to this alternator be a good choice to help give the car more power?

      What is the difference between 130 amp and 200 amp? How would i choose for my 05 mustang GT?

      • The difference is the amperage. You will need to select the one you need for the power that you need.

      Helpful (0)

      Been having problems last month or so coming to stop with the motor bogging down while running the air (07 GT). Now battery not charging and Alternator showing pegged AMP gage to the Max. Time for a new alternator. Will the 200AMP help with the bogging problem? Running with power pully's too.

      • It is not recommended to run the PA Performance High Output Alternator with underdrive pulleys as this will void PA Performance's warranty.

      Helpful (0)
      Post Your Question
      3 More Questions
      Can I use a 175 amps (Continuous Amp Rating) battery disconnect switch along with this alternator? 1 answer
      I have a 2006 GT. Will i need to do any modifying to put this in? Or is it pkug and play? Wanted to make sure i dont need new wiring or fuses or anything else. I have a small stereo system with small amp subs and touchscreen gps nav unit. Hid conversion and planned raxiom gen5 style lights. This should run that no problem? 1 answer
      Will This fit an 09 mustang Gt? I have an on mustang GT/CS. 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Alternator

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 08
      • GT - 05, 06, 07, 08

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