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Ford Performance Boss 302 Torsen Differential; 31 Spline 8.8 Inch (05-14 GT, BOSS 302, GT500)

Item 50528
AmericanMuscle no longer carries the Ford Performance Boss 302 Torsen Differential; 31 Spline 8.8 Inch (05-14 GT, BOSS 302, GT500). Please check out 2015-2023 Mustang Limited Slip Differentials for an updated selection.
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    Product Information

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


    • Standard on Boss 302 Laguna Seca
    • Full-Time Torque-Sensing, Torque Biasing Differential
    • 2.7 Drive Bias Ratio
    • 8.8" Torsen Differential
    • Requires 31 Spline Axles
    • Perfect for Street or Track
    • Fits 2005-2014 GT, Bullitt, BOSS and Shelby GT500


    Boss 302 Laguna Seca. Does your factory rear end just leave you spinning your wheels? Then upgrade to the same exact differential used in the Ford Racing "Boss 302 Laguna Seca" race car. This limited slip differential (lsd) uses a worm gear friction system that ensure your engine's power is transferred to the wheels for maximum traction.

    Application. This Ford Racing Boss 302 8.8" Differential will fit 2005-2014 solid axle equipped V8 Mustangs including the GT, Bullitt, BOSS and Shelby GT500. Requires 31 spline axles. Does not fit IRS applications.Application Note: 1986-2004 V8 Mustangs came factory equipped with 28 spline axles, except for 2003-2004 SVT Cobras which were 31 spline. All 2005 and newer V8 Mustangs come equipped with 31 spline axles.

    • 8.8" Limited Slip Differential
    • Will accept anti-lock exciter ring
    • Requires 31 spline axles
    • Requires 3 quarts Gear Oil
    • Requires 4 ounces of CM-19546-A1 friction modifier with initial fill
    • Fits solid axle only

    Technical Note. You will need to reuse your factory 8.8” gear set, or upgrade to a new set of our 8.8" rear gears for this Limited Slip Differential. No aftermarket gears are included. For normal driving conditions we recommend you use 75W 90 rear gear oil. This will give you the same oil weight as factory. For colder temps or race use try 75w 140.

    CA Residents: WARNING: Cancer and Reproductive Harm -

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (1) Limited Slip Differential

    Tech Specs


    Customer Reviews (5)

      Brand Image

      Reviews of Ford Performance Drivetrain products have an average rating of 4.8 out of 5

        Questions & Answers

        10 More Questions

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