Free Shipping On Orders Over $49. Details

Talk to a Mustang Expert
Every day 8:30AM EST - 11:00PM EST
Win Any Wheel & Tire Package! Enter Daily

SR Performance High Performance Flexplate - 164 Tooth, 8 Bolt (99-Mid 01 GT; 03-04 Mach 1; 11-14 GT)

Market Price $119.99 You Save 17% ($20.00)
Our Price


FREE Shipping

  • Item 383725
  • MPN# 383725

Will this fit your Vehicle?

In Stock Ships same business day.
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features & Details

    • 8 Bolt Crank Pattern
    • 164-Tooth
    • Chromoly Steel Construction
    • 0.035" Thicker Than Stock
    • Platinum Finish
    • SFI 29.1 Certified
    • Fits 1999-Mid 2001 GT, 2003-2004 Mach 1, 2011-2014 GT
    Direct Bolt-on Replacement. Has your factory flexplate failed in your automatic Mustang? Then replace it with a brand new SR Performance Flexplate from AmericanMuscle. This direct bolt-on flexplate features a ring gear of 164 teeth, as well as a 8-bolt crank pattern.

    Chromoly Steel Construction. This SR Performance Automatic Flexplate is constructed from cold-rolled chromoly steel and is 0.035" thicker than stock for extra strength and features a long lasting platinum finish that helps prevent the formation of rust.

    SFI 29.1 Certified. If you're using this flexplate in high performance or racing applications, SFI Certification is critical so you can run your Pony at the track or strip. And it's great for peace of mind even in a daily driver - at higher RPMs, stock cast flexplates have been known to explode.

    Application. The SR Performance Flex-plate is specifically designed to fit the 1999-Mid 2001 GT, 2003-2004 Mach 1, and 2011-2014 GT Mustangs with an automatic transmission and a eight bolt main crank.

    Technical Note. This SR Performance Flexplate has an 8 bolt main that is found in the 1999-mid 01 Mustang GT's with production date ending on 06/01, 2003-2004 Mach 1's, and 2011-2014 GT's.

    Please Note. Romeo built engines have 6 bolt cranks and Windsor built engines have 8 bolt cranks. If the 8th character in the VIN is an "X" its a Windsor block, if the 8th character in the VIN is a "W" it is a Romeo block. If unsure please check with your Ford dealer to determine if you have a 6 or an 8 bolt main.

    Fitment: 1999 2000 2001 2003 2004 2011 2012 2013 2014 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (1) flexplate
    Installation Info
    Will it fit my Mustang?

    You Might Also Like

    Customer Photos

    Questions & Answers (1)

    1 Top Rated Question

    does this flywheel have the 10 and 3/4 converter bolt pathern

    • This flywheel will feature an 8 bolt crank pattern. This will fit 1999- Mid 2001 GT, 2003-2004 Mach 1's, and 2011-2014 GT's with an automatic transmission and a 8 bolt main crank.

    Helpful (0)
    Post Your Question

    Customer Reviews (9) Write a Review

    Overall Rating 3.6

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$500-$1000

    • Fit 3.875 3.9
    • Bang For Your Buck 5 5
    • Grip / Bite 5 5

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $500-$1000

      February 20, 2018

      98 GT with 2000 PI engine swap

      Flywheel worked perfectly!! Needed to do an engine swap from a Romeo to a Windsor PI engine which takes the 8 bolt pattern, works great!


      Year: 1998 Submodel: GT

      Helpful (4)

    • 2/5

      December 05, 2017

      It's what I want but it's not a "Direct Blot On"

      You will have to drill bigger holes for the Torque converter.


      Year: 2004 Submodel: Mach 1

      Helpful (4)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      November 07, 2017

      8 bolt flex plate

      Great flex plate for the money! I needed a 8 bolt flex plate to replace my 6 bolt when I installed the new built crate motor for this mustang.


      Year: 2001 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      October 02, 2017

      Awesome product

      I bought this to add more strength and there is def a big difference between stock and this one love it. One less thing I have to worry bout breaking now.


      Year: 2011 Submodel: GT

      Helpful (4)

    • 1/5

      April 20, 2017


      The holes didn't lineup at all. Torque converter holes were way off


      Year: 1991 Submodel: Other

      Helpful (5)

    • 3/5

      November 01, 2016

      8 bolt 4R70 Flywheel

      Good thing I researched flywheel first as I fit the converter first and Had to drill/ream the converter holes for the 4R70 same as the rest of you. It is a price friendly part as long as you know to fit before trying to install trans.


      Year: 2001 Submodel: Other

      Helpful (5)

    • 2/5

      August 12, 2016

      Flexplate broke after 300 miles

      I don't think this flexplate is made for 'high performance'. I'm at about 570 horsepower at the flexplate, and the flexplate tore around the bolt holes. Lesson learned: don't go cheap.


      Year: 2002 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      July 17, 2015

      Good product

      Perfect fit. A lot better built than the own one. I would recommend this product


      Year: 2000 Submodel: GT Muscle Shoals, AL

      Helpful (4)

    • 4/5

      Installation Time: Afternoon

      July 16, 2015

      Needs mods out of the box

      I installed this in a 2001 Mustang GT, new motor w/forged 8 bolt crank. There are 2 torque converter bolt patterns on the Mustangs. One is 10.65" , and the other is 11.44 inches. It fits the crankshaft just fine. This flex plate has a 10.5" pattern which will NOT fit a 10.65" pattern converter. I was able to make it work with the assistance of my Dremel. I did call AM and let them know, so hopefully they can have their vendor make it so it fits the 10.65" converters with no modification. Also, I knew in advance that there might be the converter pattern issue BEFORE installation, so I was not forced to try and install the motor and pull it out again. Other than that, good, beefy product.


      Year: 2001 Submodel: GT Fort Myers, Fl.

      Helpful (5)

    Related Mustang Categories