• Premature wear & bushing failure
  • Harsh shifts
  • Gear ratio & solenoid codes
  • Code P0741
  • TCC apply & release concerns
  • Clutch failure


Premature wear due to sub-optimal OE bushing material allows fluid loss and misalignment that can result in harsh shifting and clutch failure.


Install improved Sonnax bushing kit to restore critical clearances and resist untimely wear.


Use of an arbor press is required for correct installation. Do not use a hydraulic press or a bushing driver/hammer combination to install, as doing so may distort the bushing and cause fitment issues.

6L45, 6L50

Bushing Kit
Part No. 104030-01K

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OE bushings in GM 6L45 and 6L50 transmissions have a tendency to wear out prematurely due to sub-optimal material composition. This wear can lead to bushing failure, harsh shifts, burnt clutches and gear ratio or solenoid codes. Sonnax bushing kit 104030-01K restores worry-free operation.

  • Upgraded material composition outperforms OE bushings
  • Superior wear characteristics eliminate premature deterioration

For GM 6L80 and 6L90, use 104030A-01K.

  • 2-6/3-5-R Hub Rear Bushing Fits 1.358" shaft journal dia.
  • Stator Support Bushing Kit Fits .904" & 1.201" shaft journal dia.
  • 2-6/3-5-R Hub Front Bushing
  • 1-2-3-4/3-5-R Drum Bushing
  • 4-5-6 Clutch Drum Bushing
  • Front Center Support Bushing Fits 2.016" housing bore dia.
  • Front Center Support Bushing Fits 2.018" housing bore dia.
  • Rear Center Support Bushing Fits 1.752" shaft journal dia.
  • Output Shaft Bushing Fits 1.189" shaft journal dia.
  • Pump Bushing 6L50 Only, PTFE Impregnated
  • Bushing Style: Precision
  • Material: Steel-backed alloy
  • 6L45, 6L50 Bushing Kit 104030-01K