Please check fitment notes & description for accurate information. 2001-2003 Mercedes-Benz ML320 3.2L 2003-2005 Mercedes-Benz ML350 3.7L 2001 Mercedes-Benz ML430 4.3L 2003-2004 Mercedes-Benz ML500 5.0L 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? .
