Rear Oxygen Sensor: Installation

CAUTION: If lubricant is spilt over the exhaust pipe, wipe it off with cloth to avoid emission of smoke or causing a fire.

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: Locating Rear Oxygen Sensor
Courtesy of SUBARU OF AMERICA, INC.
Connect the rear oxygen sensor connector to the engine harness.

Fig 2: Locating Rear Oxygen Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.
Install the under cover. <Ref. to INSTALLATION , Front Under Cover.>
Lower the vehicle.
Connect the ground terminal to battery sensor. <Ref. to BATTERY , NOTE, Note.>