Please check fitment notes & description for accurate information. 2006-2013 Mazda 3 2.0L 2006-2009 Mazda 3 2.3L 2008-2010 Mazda 5 2.3L 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? .
