Symptoms:

  • Bushing wear
  • Bushing failure
  • Clutch failure
  • Harsh shifts
  • Gear ratio & solenoid codes

Cause:

Premature wear due to sub-optimal OE bushing material in ZF 8-speed units allows fluid loss and misalignment that results in harsh shifting and clutch failure.

Correction:

Install improved Sonnax P4 sun gear bushing to restore critical clearances and resist untimely wear.

Warning:

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.

845RE, ZF8HP45, ZF8HP50, ZF8HP55, ZF8HP70, ZF8HP75

P4 Front Sun Gear Bushing
Part No. 35030-04

Package Quantity: 5

Find a Distributor

For rear P4 sun gear bushing, use 35030-05.

  • Material: Steel-backed alloy
  • Bushing Style: Precision
  • Housing Bore: 1.158"
  • Shaft Dia.: 1.038"
  • Width: 0.394"
  • 845RE, ZF8HP45, ZF8HP50, ZF8HP55, ZF8HP70, ZF8HP75 P4 Front Sun Gear Bushing 35030-04