Yukon Gear Duragrip Posi Rear Differential - 28 Spline 8.8 in. (86-04 V8)

Yukon Gear Duragrip Posi Rear Differential - 28 Spline 8.8 in. (86-04 V8)
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OUR PRICE$482.99
Yukon Mustang Gears and Axles
Item # 21611
Market Price $536.99You Save 10% ($54.00)
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Product Features

  • Put all your power to the pavement
  • Assembled 8.8" Limited Slip Differential
  • Heavy Duty - nodular case with forged 4320 internals
  • Composite clutches included
  • Requires 28 spline axles
  • Fits 1986-2004 V8 Mustangs (excludes 2003-2004 SVT Cobra)
Duragrip Posi Differential. Stop doing those ridiculous one wheel burn outs by upgrading to a Yukon 8.8in 28 Spline Duragrip Posi Differential from AmericanMuscle. A Limited Slip Differential (LSD) sometimes referred to as a "Posi" will allow both rear wheels to plant the power to the pavement giving you better traction and more impressive burnouts.

Heavy Duty. Featuring a case constructed from nodular iron, this Yukon Gear Duragrip Limited Slip Differential boast forged 4320 steel internals and composite clutches for dependable heavy duty performance and long life.

Application. This 8.8" Yukon Gear Duragrip Posi Differential will fit solid axle equipped V8 Mustangs from 1986 to 2004, including GT, Bullitt, Mach 1, and SVT Cobra models. Requires use of 28 spline axles. (Will not fit 2003-2004 SVT Cobra).

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.

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.


  • 8.8" Limited Slip Differential
  • Heavy Duty
  • 10 bolt cover
  • Requires 28 spline axles
  • Requires 3 quarts gear oil
  • Requires 4 ounces of CM-19546-A1 friction modifier with initial fill
  • Fits solid or independent rear suspension

Installation Time:

(approx) 4 Hours

Difficulty Level:

Mechanical expertise or professional installation required.

What's in the box?

  • (1) 8.8" Limited Slip Differential

What's in the box?

  • (1) 8.8" Limited Slip Differential
  • GT 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
  • Cobra 94, 95, 96, 97, 98, 99, 01
  • Mach 1 03, 04
  • Bullitt 01
  • Foxbody 86, 87, 88, 89, 90, 91, 92, 93
Known Exceptions:
Fits Mustangs equipped with a 8.8" rear end. Will not fit 2003-2004 SVT Cobra

About Yukon Gear

Yukon Mustang Gears and Axles
Yukon Gear and Axle build quality parts that exceed expectation, it’s that simple! Yukons in-house engineering team utilizes state-of-the-art computer software to design expectational products that are manufactured in partnership with some of the world’s foremost leaders in OEM manufacturing. Only after rigorous testing and intense quality control inspection can it earn the name Yukon.