Front Oxygen (A/F) Sensor: Installation

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

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

Anti-seize compound: NEVER-SEEZ NSN, JET LUBE SS-30 or equivalent
Install the front oxygen (A/F) sensor.
Tightening torque: 30 N.m (3.1 kgf-m, 22.1 ft-lb)

Fig 1: Locating Front Oxygen (A/F) Sensor
Courtesy of SUBARU OF AMERICA, INC.
Connect the front oxygen (A/F) sensor connector, and secure the front oxygen (A/F) sensor harness by using the clip (A).

Fig 2: Locating Front Oxygen (A/F) Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.
Install the radiator main fan motor assembly. Ref. to INSTALLATION , Radiator Sub Fan and Fan Motor.
Connect the ground cable to battery.

Fig 3: Identifying Ground Cable And Battery
Courtesy of SUBARU OF AMERICA, INC.