GM-39547 is a press adapter use with GM-39511 Countershaft Bearing Remover split plate to remove the countershaft large bearing. GM-39547 provides a surface for a hydraulic press to remove the bearing without damaging the bearing or the countershaft. GM-39511 is placed around the countershaft large bearing, then placed on a press bed. GM-39547 is placed onto the countershaft bearing, and used with a hydraulic press to remove the bearing.