DoctorDiff Drivetrain Components

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489 Kit w/Crush Sleeve
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8 3/4" Minimum Installation Kit

$43.00

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Handy kit includes the small parts required to perform a Mopar 8 3/4" gear swap. 

8 3/4" minimum installation kit includes:

  • Pinion preload shim pack
  • Pinion seal
  • Pinion depth shim pack
  • Pinion nut(s) with washer(s)
  • Gear marking compound
  • 489 case kit has the option of a standard crush sleave, or a precision machined, solid billet steel pinion bearing spacer.

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