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Ford Limited Slip Differential Spider Gears - 31 Spline 8.8 in (03-04 Cobra; 05-14 V8; 11-14 V6)

Item 384050
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    Features & Details

    • 8.8" Limited Slip Differential Spider Gears
    • Original Factory Equipment - OE Fit and Finish
    • Genuine Ford OEM Part - AL3Z4215A
    • Requires 31 Spline Axles
    • Fits 2003-2004 Cobra, 2005-2014 V8, 2011-2014 V6
    Direct Fit OEM Replacement. Replace your Mustangs old worn out 8.8" Limited Slip Differential Spider Gears with direct fit genuine Ford replacements that will ensure that you put all the power to the pavement. These spider gears are the same exact ones used in the original 31 spline 8.8" Ford Traction-Loc differential.

    Superior Quality. Manufactured to the original factory specifications, this genuine Ford Limited Slip Differential Spider Gear set is constructed from steel for superior strength and quality.

    Application. These 8.8 in Limited Slip Differential Spider Gears are designed to fit 2003-2004 IRS SVT Cobras as well as solid axle equipped 2005-2014 V8's and 2011-2014 V6 models. Requires 31 spline axles.

    Application Note. 1986-2004 V8 Mustangs came factory equipped with 28 spline axles, except for 2003-2004 SVT Cobras which were 31 spline. All 2005-2014 V8 and 2011-2014 V6 Mustangs come equipped with 31 spline axles.

    Technical Note. You will need to reuse your factory 8.8” gear set, or upgrade to a set of our 8.8" rear gears required 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.

    Fitment: 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Details

    MPN# AL3Z-4215-A

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (2) Large Gears
    • (2) Small Gears
    • (1) Cross Pin Bolt
    Installation Info
    Will it fit my Mustang?

      Customer Photos (5) Submit Your Photo

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        Questions & Answers (3)

        3 Top Rated Questions

        Why wouldnt these fit a 2001 cobra? They have 31 spline halfshafts on the differential side and 28 on the hub side. Just like the 03-04 cobra's.

        • TheFord Limited Slip Differential Spider Gears will not work with the 2001 Cobra as the shaft diameter is smaller than the 2003-2004 Cobras.

        Helpful (0)

        Will this spider gear set fit an 99 explorer 8.8 with a traction loc diff?

        • We can only guarantee fitment of these Spider Gears for a 03-04 Cobra, 05-14 V8, and 11-14 V6. Though, if you were to put this on another vehicle, it would have to have a 31 spline axle with an 8.8" gear set.

        Helpful (0)

        Can I use this with 31 spline axles in my stock 28 spline carriage housing to convert to 31 spline rear end?

        • Hi, You will have change the entire differential instead of just using these Ford Limited Slip Differential Spider Gears - 31 Spline 8.8 in. to assure correct fitment.

        Helpful (0)
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          Customer Reviews (7) Write a Review

          Ratings Summary

          5 out of 5 overall rating from 7 customers

          • September 06, 2019

            5 1991 LX - dmills4229

            No problems so far

            Gears were perfect fit. I recommend you follow Chris Fix video for hassle free install. No noises or any issues so far after about 100 miles.

            Helpful (0)
          • January 26, 2018

            5 2005 GT - MatthewC

            05 Mustang GT

            Worked great, only place I could find the correct gears.

            Helpful (11)
          • October 17, 2017

            5 1989 LX - Casey


            Great product. Happy to see a perfect fit and replacemnt. As always fast reliable shipping

            Helpful (11)
          • June 11, 2017

            5 2008 GT - vstarchopper

            New Gears

            Changed my ratio from 4.10's to 3.55 to get better traction. They were easy to install. While I had everything apart, I changed out my clutch pack too. No issues thus far.

            Helpful (11)
          • March 06, 2017

            5 2003 Cobra - Frank302

            Ford spider gears

            Glad I could just replace what I needed in my LSD. Easy install once you already have the diff out, originally I was replacing the gasket on the cover and noticed a few chips off the spider gears so out they went and in the new ones that easy

            Helpful (10)
          • September 19, 2016

            5 2003 Cobra - 03whipplecobra

            Needed new spider gears

            Great product. Always good dealing with American muscle

            Helpful (12)
          • August 02, 2015

            5 2005 GT - Red05interceptor

            Spider Gear Rebuild

            Once Again American Muscle parts do not Disappoint. Gears fit perfectly, operates smoothly, and corrected my noisy gears. Not to mention very reasonably priced.

            Helpful (13)

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