Exhaust Gas Oxygen (O2) Sensor

O2 sensor is mounted in the exhaust pipe just below the exhaust header. It is equipped with a permanent pigtail which must be protected from damage when the sensor is removed. Ensure sensor is free of contaminants, avoid using cleaning solvents of any type. Sensor may be difficult to remove when engine temperature is less than 120°F (49°C). Always use anti-seize compound on threads prior to installation. Tighten sensor to 33 ft. lbs. (45 N.m).