DT-50839 is used with CH-50342 Hardware kit to replace the mount bushing on the transmission adapter plate. The bushing does not have an outer shell, so the hardware in CH-50342 drives the center body of the bushing. DT-50839 has a window to allow the technician to verify the bushing position during installation, and is deep enough to allow removing the bushing, as well. DT-50839 also will clear the dimple cast into the plate body to indicate the alignment of the bushing during installation. Unapproved methods may mis-position or damage the bushing or adapter plate.