9-2X F4-2.0L Turbo (2005)
Install the spline shaft until the spline portion is inside the side oil seal using ST.
ST 3200503 7 SIDE OIL SEAL PROTECTOR
Remove the ST.
ST 3200503 7 SIDE OIL SEAL PROTECTOR
Hereafter, reassemble in the reverse order of disassembly.