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Yukon Gear Positraction internals For 8.5in GM w/ 28 Spline Axles

Yukon Gear & Axle spider gear kits utilize the highest quality materials and best production techniques in the industry to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement. Yukon Gear & Axle spider gear kits utilize the highest quality materials and best production techniques in the industry to ensure a longer lasting spider gear set. This kit is compatible with Yukon Dura Grip or Eaton Positraction only. Does not fit the factory G80 Gov-Loc Positraction.
  • Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers
  • Incl. Two Side Gears; Two Pinion Gears; Cross Pin Shaft; Roll Pin And Spider Gear Thrust Washers
  • Fits GM 8.5" differential outfitted with Dura Grip positraction
  • Fits GM 8.5 in. Differential Outfitted w/Dura Grip Positraction
  • Does not include clutches
  • 28 spline axles

The Yukon Gear & Axle YPKGM8.5-P-28 Positraction Spider Gear Kit provides the essential internal components for a complete and proper spider gear replacement in compatible GM 8.5-inch differentials. Manufactured using high-quality materials and proven production techniques, this kit is designed to support dependable operation and extended service life in automotive drivetrain applications.
This replacement kit is engineered for GM 8.5-inch differentials equipped with Yukon Dura Grip or Eaton Positraction units and 28-spline axles. It is not compatible with the factory G80 Gov-Loc Positraction differential. The kit includes the primary spider gear components and hardware required for installation, helping simplify the repair process when replacing worn or damaged internal parts.


  • Includes two side gears, two pinion gears, a cross pin shaft, roll pin, and spider gear thrust washers

  • Compatible with GM 8.5-inch differentials equipped with Yukon Dura Grip Positraction

  • Also designed for compatible Eaton Positraction applications

  • Designed for 28-spline axles

  • Does not fit the factory G80 Gov-Loc Positraction differential

  • Does not include clutches


The Yukon Gear & Axle YPKGM8.5-P-28 is intended for professional drivetrain repairs and differential servicing where accurate component compatibility is essential. Verify the differential model, Positraction type, and axle spline count before installation to ensure proper fitment. This kit includes spider gear internals only and should be used with the appropriate compatible carrier and clutch components when required.

Features:

  • Complete spider gear replacement kit for compatible GM 8.5-inch differentials
  • Includes two side gears, two pinion gears, cross pin shaft, roll pin, and spider gear thrust washers
  • Compatible with Yukon Dura Grip and Eaton Positraction units
  • Designed for 28-spline axles
  • Made with high-quality materials and production techniques for dependable service
  • Does not fit factory G80 Gov-Loc Positraction differentials
  • Clutches are not included