Rear Oxygen Sensor: Installation

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

Anti-seize compound: SS-30 by JET LUBE

Fig 1: Applying Anti-Seize Compound To Threaded Portion Of Rear Oxygen Sensor
Courtesy of SUBARU OF AMERICA, INC.
Install rear oxygen sensor.
Tightening torque: 21 N-m (2.1 kgf-m, 15.2 ft-lb)

Fig 2: Installing Rear Oxygen Sensor
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Connect connector to rear oxygen sensor.

Fig 3: Connecting Connector To Rear Oxygen Sensor
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Lower the vehicle.
Connect battery ground cable.

Fig 4: Connecting Battery Ground Cable
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