Sonnax 77918SK Stator Support Shaft Assembly Kit for GM 700R4 4L60 4L60-E

The Sonnax 77918SK stator support shaft assembly is engineered to solve common failure points in GM 700R4, 4L60, and 4L60-E automatic transmissions. This universal shaft assembly fits transmissions with 245mm or 298mm torque converters (non-reluctor style) from 1982-2004.

Key Features:

• Eliminates sleeve rotation through mechanical fastening with a set screw and Loctite, preventing oil flow blockage
• 100% leak tested by Sonnax to ensure a secure seal and prevent transmission damage
• Includes pressed-in front and rear stator shaft bushings (77002B and 35007A)
• Slotted bolt holes for easy alignment during installation
• Universal bolt pattern for broad compatibility
• Shaft length: 6.830 inches

OEM and many aftermarket stator support shafts suffer from sleeve rotation issues caused by inadequate bonding methods. When the internal sleeve rotates, it blocks critical oil passages and leads to transmission failure. Metal chips from manufacturing can also become trapped and cause internal damage. The Sonnax design addresses these problems with superior mechanical fastening and quality testing, making it ideal for transmission rebuilds and preventative maintenance.