WARNING: This page is about a different car, the 2012 Subaru Outback and 2012 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
Install in the reverse order of removal.
Tightening torque:
22 N.m (2.2 kgf-m, 16.2 ft-lb)
Fig 1: Identifying Engine Coolant Temperature Sensor Connectors