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Yukon Gear 8.8 in. Duragrip Posi Rear Differential w/ 31 Spline 5 Lug Axles (86-93 5.0L)

Market Price $677.65 You Save 12% ($77.96)
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  • Item 393818
  • MPN# 393818

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    Features & Details

    • Put the Power to the Pavement
    • Rear 5-Lug Conversion Kit
    • Yukon 8.8" Limited Slip Differential
    • Heavy Duty - Nodular Case with Forged 4320 Internals
    • Yukon 31 Spline 5 Lug Axles Included
    • Fits 1986-1993 5.0L V8 Mustangs with an 8.8" Differential Housing
    Put the Power to the Pavement. Boost your Mustang's performance and improve road handling with the Yukon Rear 5-Lug Conversion Kit. This Yukon Kit includes an 8.8in 31 Spline Duragrip Posi Differential, a pair of 5 Lug Axles and all the bearings and shims required for installation. This Yukon kit is ideal for those Fox Body owners looking to upgrade their stock differential and axles for better traction and more impressive burnouts.

    Posi Rear Differential . The Duragrip Posi Rear Differential features a case constructed from a heavy duty nodular iron and boast forged 4320 steel internals and composite clutches for dependable heavy duty performance and long life.

    31 Spline 5 Lug Axles. Stronger than OEM, Yukon Gear manufactures their 31 spline 5 lug axles from high quality 1541H alloy steel for superior strength and uses a rolled spline process that produces an axle spline that is up to 30% stronger than standard cut splines.

    Durable Alloys. The parts in this Yukon Gear and Axle kit are built from high quality, heat-treated metal alloys for long-term durability. Top quality ensures extended use before needing to replace the parts. This complete axle kit includes everything you need for optimal road handling.

    Application. This Yukon Gear 8.8 in. Duragrip Posi Rear Differential Upgrade Kit with 31 Spline 5 Lug Axles is designed for 1986 to 1993 V8 Mustangs equipped with a 8.8" rear differential housing.

    Technical Note. 1986-1993 V8 Mustangs came from the factory equipped with 28 spline axles. 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: 1986 1987 1988 1989 1990 1991 1992 1993 Details

    What's in the Box
    • (1) 8.8" Limited Slip Differential
    • (2) 31 Spline 5 Lug axles
    • Carrier Bearings
    • Carrier Shims
    • Axle Bearings
    • Seals
    • Studs
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Customer Reviews (2) Write a Review

    Overall Rating 5.0

    out of 5 stars




    • 5/5

      October 26, 2016

      Best for the price! What more do you need.!

      After having my drag car rebuilt with more ponies it was time to upgrade that old differential, thank goodness the guys at American Muscle has this kit in stock. Saves a lot of time and money! I needed the rear to be 5 lug to go with my drag wheels and tires so it was perfect, thanks again American Muscle, my car has better burn outs and better off the line!

      zayy5224

      Year: 1992 Submodel: GT

      Helpful (1)

    • 5/5

      October 25, 2016

      Stronger !!

      Great product easy to install Stronger you can do bigger burnouts and harder launch's Getting car track ready this is the upgrade for you and some good gears

      JULIAN

      Year: 1989 Submodel: GT

      Helpful (2)

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