Rear Oxygen Sensor: Installation

Before installing rear oxygen (A/F) sensor, apply the anti-seize compound only to the threaded portion of rear oxygen (A/F) sensor. This facilitates the next removal.
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, 15.2 ft-lb)

Fig 1: Identifying Rear Oxygen Sensor
Courtesy of SUBARU OF AMERICA, INC.
Connect the connector to rear oxygen sensor.
Lower the vehicle.
Connect the battery ground cable to the battery.

Fig 2: Connecting Ground Cable To Battery
Courtesy of SUBARU OF AMERICA, INC.