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Ford Performance Trac-Lok Limited Slip Differential; 31 Spline 9-Inch

Item 102227
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M-F 9A-11P, Sat-Sun 9A-9P
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      Product Information

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


      • Put the Power to the Pavement
      • 9" Limited Slip Differential
      • Heavy Duty Construction
      • Requires 31 Spline Axles, 9" Ring and Pinion and 9" Housing
      • Perfect for Street and Strip Application
      • Intended for Custom Applications


      Limited Slip Differential. Is your stock rear end leaving you in the lurch? Then you need to upgrade to a Ford Racing 9" 31-Spline Traction-LOK Limited Slip Differential from AmericanMuscle. A Limited Slip Differential (LSD) sometimes referred to as a "Posi" will allow both rear wheels to put the power down on the pavement giving you better traction and more impressive burnouts.

      Heavy Duty Construction. Featuring a case cast from high-strength nodular iron, this Ford Racing Limited Slip Differential boast 1536 steel billet case caps and OEM profile gears made of high-manganese, high-chromium alloy steel for dependable heavy duty performance and long life.

      Required Upgrades. This Ford Racing 9" Limited Slip Differential requires a pair of 9" 31-spline axles, 9" ring & pinion gears, and a 9" rear axle housing.

      This Ford Racing 9" Limited Slip Differential will not fit stock Mustangs, it is intended for custom built street and strip applications.

      Application Note. All 1986-2004 V8 Mustangs came factory equipped a with 8.8" rear differential with 28 spline axles, except for 2003-2004 SVT Cobras which were 31 spline. All 2005 and newer V8 Mustangs come equipped a with 8.8" rear differential with 31 spline axles.

      Technical Note. This Limited Slip Differential requires 4-ounces of CM-19546-A1 friction modifier with initial fill.


      Ford Performance M-4204-F31A

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) 9" Limited Slip Differential

      Tech Specs


      Customer Reviews (2)

        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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