This is a new ACdelco High Performance 5 pinion input planetary for the 4L60E or 700R4 transmissions. This planet is a drop
in replacement for the factory 4 or 5 pinion planets in the late model
transmissions using the new style bearing reaction hub. To retro fit this planetary in older style transmissions with the older style reaction hubs (thrust washer)
a new style reaction hub that uses the torrington bearing between sun shell and reaction hub will be necessary. We have these combination planet and hub kits available.