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Symptoms:

  • Bushing failure
  • Reaction carrier shaft damage

Cause:

Oil leakage due to inadequate support of the reaction sun gear.

Correction:

The Sonnax sun gear bushing is more than one-and-a-half times as wide as the OEM and maximizes bushing support.

4L60, 4L60-E, 4L65-E, 4L70-E

Wide Reaction Sun Gear Bushing
Part No. 77010-01

View Instructions

The Sonnax replacement bushing 77010-01 is one-and-a-half times the width of the OE version and fills the entire sun gear bushing groove. This wider bushing maximizes support. The bushing is steel-backed bronze that is precision machined to provide minimal clearance with the mating shaft.

  • Provides better control of lube oil.
  • Has more support for sun gear and reaction shell.
  • Greater longevity than OE bushing
  • Sun Gear, Wide, 1.5 Times wider than OE
  • Material: Copper/Lead
  • Bushing Style: Precision
  • Housing Bore: 1.706"
  • Shaft Dia.: 1.575"
  • Width: 0.600"
  • 77010 01 combo
  • 77010 01