Please check fitment notes & description for accurate information. For Nissan Frontier 2.4L 1998-2000 For Nissan Frontier 3.3L 1999-2003 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? .
