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Ford Performance T2R Torsen Differential - 34 Spline 8.8 in. (15-19 GT, EcoBoost, V6)

Market Price $812.99 You Save 12% ($94.00)
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  • Item 390234
  • MPN# M-4204-MT

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    Features & Details

    • Standard Equipment on Performance Pack Equipped Mustangs
    • 8.8" T-2R Torsen Differential
    • Full-Time Torque-Sensing, Torque-Biasing
    • Requires 34 Spline Axles
    • Genuine Ford Racing Part M-4204-MT
    • Direct Fit Performance Upgrade
    • Designed for Use with 3.31, 3.55, 3.73 and 4.09 Super 8.8" Gear Sets
    • Fits 2015-2019 V6, EcoBoost and GT Mustangs
    Original Performance Pack Equipment. Does your Mustang's factory equipped limited slip differential (LSD) leave you spinning your wheels? The stock LSD is fine for the daily driver and boulevard cruiser, but not the hard driving performance enthusiast. When you upgrade to a Ford Racing Limited Slip T2R Torsen Differential you will experience a monumental improvement in both traction and handling performance. This Ford Racing Torsen Differential is the same exact one that is found as standard equipment on Performance Pack GT Mustangs, making it ideal for performance applications.

    Full-Time Torque-Sensing, Torque-Biasing. Ford Racing's T-2R Torsen 8.8" differential uses a worm gear friction system that features full-time torque-sensing and torque-biasing for maximize performance. Torque Sensing keeps power going to the ground during changing traction conditions, while Torque Bias factors how much torque the differential can send to the wheels depending on the available traction. This Torsen design is far superior to standard limited-slip differentials making it perfect for street, auto-crossing, and road racing.

    Required Upgrade. This Ford Racing IRS Torsen Differential was specifically engineered for use with Ford Racing Super 8.8" IRS Gear and Pinion Sets, including 3.31, 3.55, 3.73, and 4.09 gear ratios. Sold separately. This Torsen Differential is not for use with 3.15 gears.

    Application. This Ford Racing 8.8" Limited Slip T2R Torsen Differential is designed to be a direct fit upgrade replacement for 2015 to 2019 V6, EcoBoost and GT Mustangs equipped with independent rear suspensions (IRS) and requires the use of 34 spline axles.

    Technical Note. 4-ounces of CM-19546-A1 friction modifier will be required on the initial fill.

    Fitment: 2015 2016 2017 2018 2019 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (1) IRS Torsen Differential
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Questions & Answers (14)

    5 Top Rated Questions

    I have a 2017 GT premium no PP. Currently 30K miles. Can I use this diff with the 3:55 gears in the car now and should I also get the ring and pinion kit when cracking open the rear end to install it?

    • Swapping this differential will still allow you to use the original 3.55 Gears installed on your mustang. However, you will absolutely need to install a new ring and pinion kit along with some new gear oil and friction modifier.

    Helpful (1)

    I have a ‘16 base GT with 3.15 rear, can I use the stock housing and install this diff and ford performance 3.73 gear?

    • This diff would allow you to run 3.73 gears with the stock housing yes.

    Helpful (1)

    I have a GT with the base 3.31 gearing. Will this work with those gears? Is there anything else necessary in order for it to work?

    • This diff would work with the 3.31 gears and you would not need anything else for the install.

    Helpful (1)

    Can this unit be ordered loaded with the 4:09 gears?

    • The Ford Performance T2R Torsen Differential would not be able to be ordered pre-loaded no.

    Helpful (1)

    Hi, is this better compared to the wavetrac differential?

    • The Ford Performance T2R Torsen Differential is the standard equipment on the Performance Pack Mustangs, so it will give great traction and handling. Since we do not offer the Wavetrac Differential, we cannot give an accurate comparison.

    Helpful (1)
    Post Your Question
    9 More Questions
    Will this Performance T2R Torsen Differential - 34 spline 8.8 also fit a 2016 Ford F150 with the 34 Spline 8.8 with 3.31 gears and EcoBoost 2.7L V6? 0 answer
    Hey, I drive 2016 mustang gt without PP, now my car diff is 3.55. If i want to use T2R Torsen Differential, should i buy new ring and pinion? or just use original ring and pinion? 1 answer
    will this fit a 2016 ecoboost 2.7 f150? i have a super 8.8 diff 1 answer
    I have a new 2017 Mustang v6 with the 3.1 gears. I want to upgrade to 3.73 gears. Besides the gears, what differential and swap kit do I need? Thanks. 1 answer
    I have a PP 2017 European Mustang EcoBoost with automatic transmission, a trac-lok differential and 3.55 rear gear ratio. Is this all I need in order to switch to a Torsen differential, while maintaining the same gears ratio? Also, will this work on the PP European EcoBoost? It seems that you do not ship to Europe. Does this mean that it is not compatible with the European models? 1 answer
    Need some help.. I have a roush powered 16 s550 with 3.73 gears, performance pack. When going thru the 1/4 I am in fifth gear which, I wanna be in 4th. I was reading that I should have 3.31. I do not see them on the site and would you recommend that combo? DO you sell a finished rear with these gears so I can swap the entire unit? The stock unit with 3.31 from the factory did they have this torsen diff in them? 1 answer
    what other parts are required to install this in a non performance package mustang ecoboost. it says 34 spline axles is that all? are the upgraded hp axles ya'll offer 34 spline? 1 answer
    I have a 2015 Mustang with the torsion differential (performance package)I had the dealer change the fluid (XY-75w85-QL) and added the XL-3 additive. Driving home I noticed a whine at ~75 mile/hour by adding this additive could cause this whine noise? 1 answer
    What is the actual torque bias ratio? 1 answer

    Customer Reviews (1) Write a Review

    Overall Rating 5

    out of 5 stars

    • 5/5

      July 27, 2016

      Its must have for car lovers

      This item is better than the stock differential. I notice a big difference in traction and handling performance.


      Year: 2016 Submodel: Ecoboost

      Helpful (14)

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