Caution: Refer to Heated Oxygen and Oxygen Sensor Caution in the Preface section.
Caution: Refer to Excessive Force and Oxygen Sensor Caution in the Preface section.
Note: A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.
Caution: Refer to Component Fastener Tightening Caution in the Preface section.