Please check fitment notes & description for accurate information. 2001-2002 Ford Expedition 5.4L 2002-2003 Ford F-150 5.4L 2004 Ford F-150 Heritage 5.4L 2001-2002 Lincoln Navigator 5.4L Oxygen Sensor's Location: How do I know the O2 sensor is good or not? Check engine light on A reduction in fuel economy. Your catalytic converter fails unexpectedly Exhaust emissions reach undesirable levels. How to install the oxygen sensor? .
