Rear Oxygen Sensor: Installation

Before installing rear oxygen sensor, apply the anti-seize compound only to the threaded portion of rear oxygen sensor to make the next removal easier.
CAUTION: Never apply anti-seize compound to the protector of rear oxygen sensor.

Anti-seize compound:

NEVER-SEEZ NSN, JET LUBE SS-30 or equivalent
Install the rear oxygen sensor.
Tightening torque:

21 N.m (2.1 kgf-m, 15.5 ft-lb)

Fig 1: Identifying Front Oxygen Sensor And Rear Oxygen Sensor
Courtesy of SUBARU OF AMERICA, INC.
Install the under cover.
Lower the vehicle.
Connect the connector to rear oxygen sensor and mount the harness clips to the bracket for fastening.

Fig 2: Identifying Rear Oxygen Sensor Connector And Clip
Courtesy of SUBARU OF AMERICA, INC.
Connect the battery ground cable to battery.

Fig 3: Identifying Ground Cable Of Battery

Courtesy of SUBARU OF AMERICA, INC.