LH side

WARNING: This page is about a different variant/trim than selected.

Before installing front oxygen (A/F) sensor, apply anti-seize compound only to the threaded portion of front oxygen (A/F) sensor to make the next removal easier.
Anti-seize compound:

SS-30 JET LUBE

CAUTION: Never apply anti-seize compound to the protector of front oxygen (A/F) sensor.
Install the front oxygen (A/F) sensor.
Tightening torque:

21 N.m (2.1 kgf-m, 15.2 ft-lb)

Fig 1: Installing Front Oxygen (A/F) Sensor
Courtesy of SUBARU OF AMERICA, INC.
Install the front oxygen (A/F) sensor harness to bracket.

Fig 2: Installing Front Oxygen (A/F) Sensor Harness To Bracket
Courtesy of SUBARU OF AMERICA, INC.
Install the under cover.
Lower the vehicle.
Connect the connector of front oxygen (A/F) sensor, and connect the connector to bracket.

Fig 3: Connecting Connector Of Front Oxygen (A/F) Sensor
Courtesy of SUBARU OF AMERICA, INC.
Connect the battery ground cable to battery.

Fig 4: Connecting Battery Ground Cable To Battery
Courtesy of SUBARU OF AMERICA, INC.