Front Oxygen (A/F) 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 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 Sensor Threaded Portion
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 And Clips
Courtesy of SUBARU OF AMERICA, INC.
Install the radiator main fan motor assembly. Refer to RADIATOR SUB FAN AND FAN MOTOR .
Connect the ground cable to battery.

Fig 3: Disconnecting Ground Cable From Battery
Courtesy of SUBARU OF AMERICA, INC.