Please check fitment notes & description for accurate information. 2005-2006 Nissan Frontier 4.0L 2005-2006 Nissan Pathfinder 4.0L 2005-2006 Nissan Xterra 4.0L 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? .
