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

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