Rear Oxygen Sensor: Installation

Before installing rear oxygen sensor, apply the anti-seize compound only to the threaded portion of rear oxygen 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.
- AT model
  
  Fig 2: Identifying Rear Oxygen Sensor (AT Model)
  Courtesy of SUBARU OF AMERICA, INC.
- MT model
Connect the connector to rear oxygen sensor.

Fig 4: Locating Connector For Rear Oxygen Sensor
Courtesy of SUBARU OF AMERICA, INC.
Connect the clip to the crossmember.

Fig 5: Locating Clip
Courtesy of SUBARU OF AMERICA, INC.
Lower the vehicle.
Connect the ground cable to the battery.

Fig 6: Disconnecting Battery Ground Cable

Courtesy of SUBARU OF AMERICA, INC.