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 Rear Oxygen Sensor
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Connect the connector to the rear oxygen sensor, and hold the rear oxygen sensor harness with clip (A).

Fig 2: Identifying Clip
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Lower the vehicle.
Connect the battery ground cable to the battery.

Fig 3: Disconnecting Ground Cable From Battery

Courtesy of SUBARU OF AMERICA, INC.