Impreza WRX STI F4-2.5L DOHC Turbo (2007)
11) Insert the DOJ into rear differential.
(1) Install the ST to rear differential.
ST 28099PA090 OIL SEAL PROTECTOR
(2) Install the spline shaft until the spline portion is inside the side oil seal using ST.
ST 28099PA090 OIL SEAL PROTECTOR
(3) Remove the ST.
ST 28099PA090 OIL SEAL PROTECTOR
12) Hereafter, reassemble in the reverse order of disassembly.