Disconnect the negative battery terminal
Locate the oxygen sensor
Raise and secure the vehicle if needed
Unplug the sensor electrical connector
Apply penetrating oil to the sensor threads if needed
Use an oxygen sensor socket or wrench to remove the old sensor
Compare the new sensor to the old sensor
Apply anti-seize only if the new sensor does not come pre-coated
Thread the new sensor in by hand
Tighten the sensor to the specified torque
Reconnect the electrical connector
Lower the vehicle if it was raised
Reconnect the negative battery terminal
Clear any trouble codes with a scan tool
Start the engine and check for leaks or warning lights