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  • 3-4 Clutch failure
  • No 3rd
  • Delayed Reverse
  • Overheated converter
  • Code 1870


Overheating and manufacturing flaws cause sleeve rotation and block oil flow, which leads to transmission failure.


Replace worn or damaged stator shaft with this stator support shaft assembly

4L60-E, 4L65-E, 4L70-E

Stator Support Shaft Assembly
Part No. 77918S-1K

280mm or 300mm Converter, non-reluctor style

View Instructions

Sonnax stator support shaft assembly 77918S-1K eliminates sleeve rotation by mechanically fastening the sleeve in place with a set screw, further securing the sleeve in place with Loctite®. The assembly is 100% leak tested by Sonnax to ensure a secure seal. Shafts have slotted bolt holes for easy alignment during installation.

  • Set screw and Loctite eliminate sleeve rotation
  • Slotted bolt holes for easy installation
  • No machining required
  • Bushings installed
  • Stator Support Shaft with Bushings Installed 7.300" Long

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  • 77918s 1k alt
  • 77918s 1k