You are buying a tool to install the rear geartrain on all turbo 400, 4L80E and 4L85E transmissions, it is made of steel for long life.

It will work on 375B, 3L80, 4L80E and 4L85E as well.

It is very simple to use:

  • Slide the tool into the groove on the main shaft as shown
  • This will allow you to easily lift the heavy rear geartrain assembly
  • Insert the geartrain into the transmission
  • Slide the tool off the main shaft and install the center support bolt, snap ring, etc.