700R4/4L60E/4L65E/4L70E Transmission Upgraded Wide Style Reaction Sun Gear Bushing by Sonnax

Sonnax Part Number: 77010-01

WARNING

Measure the sun gear bore. Installing this bushing into a bore that is smaller than 1.705”-1.706” will result in a tight fit with the mating reaction shaft.  May not work in some late-production sun gears with OE finish-in-place bushings.

The Sonnax wide reaction sun gear 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
• 1.5 Times wider than OE for maximum support