The Sonnax wide reaction sun gear bushing 77010-01 for listed GM units, 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