WARNING: This page is about a different car, the 2016 Subaru Outback and 2016 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
Install the rear differential front member with a new self-locking nut.
Tightening torque:
T1: 50 N.m (5.1 kgf-m, 36.9 ft-lb)
T2: 110 N.m (11.2 kgf-m, 81.1 ft-lb)
Fig 1: Installing Rear Differential Front Member With Self-Locking Nut