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.
Anti-seize compound

NEVER-SEEZ NSN, JET LUBE SS-30 or the equivalent

CAUTION: Never apply anti-seize compound to the protector of rear oxygen sensor.
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: [AT Model]
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- MT model
  
  Fig 3: [MT Model]
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Connect the rear oxygen sensor connector.

Fig 4: Identifying Rear Oxygen Sensor
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Connect the clip to the crossmember.

Fig 5: Identifying Crossmember Clip
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Lower the vehicle.
Connect the ground cable to the battery.

Fig 6: Disconnecting Ground Cable From Battery
Courtesy of SUBARU OF AMERICA, INC.