Sonnax 77749-02K - 700R4 4L60E Smart Shell Sun Gear Shell for GM Transmissions
Sonnax Smart Shell Sun Gear Shell for 4L60, 4L60E, 4L65E, 4L70E, and 700R4 GM Transmission.
This is a heavy duty upgrade for these transmission applications.
- Heavy Duty Reaction Shell
- Four-Tab Enclosed Thrust Bearing
- Custom Roller Clutch Race
The Sonnax SmartShell is a heavy duty reaction shell kit designed to prevent damage to the rear planetary assembly. The reinforced shell is designed to withstand torque load. Thrust load passes to the carrier from the shell through the large bearing and race, bypassing the small planetary bearing.
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