• Monitors the air-to-fuel ratio within your engine
• Can become worn over time or damaged by a fluid leak
• Replacement by an INFINITI professional is recommended

Your vehicle's combustion system depends on various sensors to maintain optimal conditions for performance. One of these mechanisms if the Oxygen Sensor. At their inception, these sensors were invented to help limit emissions, and are now a standard offering in most current vehicles. Depending on which INFINITI model and year you drive, your engine may have one or more sensors.

Your Oxygen Sensors help measure the air-to-fuel ratio in your engine, helping your engine's internal computer regulate the mixture depending on whether your engine is burning rich (too little oxygen) or burning lean (too much oxygen). Having the wrong air-fuel mixture may negatively affect the combustion engine, resulting in poorer fuel efficiency and an increase in emissions. That's one reason why it's so important to get a genuine INFINITI Oxygen Sensor.

An Oxygen Sensor produces an electric charge, and the amount of voltage it results in depends on the product of the exhaust system. In other words, the electricity generated by your INFINITI Oxygen Sensor fluctuates with changes in the air-fuel ratio. When the system notes a variance in voltage, your vehicle's onboard computer makes adjustments to the fuel mixtures to keep the combustion engine running as designed.

Your Oxygen Sensor may need to be replaced after a period of time or usage. In some cases, you may need to replace it prematurely if it comes in contact with coolant or oil due to leaks or other contaminants. Some telltale signs that indicate the need for a new Oxygen Sensor are: engine misfires, rough idling, decreased gas mileage, and an illuminated dashboard warning light.

Because most modern cars rely on more than one Oxygen Sensor to regulate the operation of the combustion process, it can be hard for a DIY mechanic to diagnose and replace the right sensor on their own. In some cases, the process involves a specialized code scanner and jacking the vehicle up to get to the undercarriage. So many INFINITI owners opt for getting O2 sensor replacement services from their local INFINITI experts.

Have you noticed any signs of O2 sensor malfunctions? Order an authentic Oxygen Sensor for your INFINITI EX35 2008-2014, INFINITI EX37 2013-2014, INFINITI FX35 2007-2012, INFINITI FX37 2013, INFINITI FX50 2009-2013, INFINITI G25 2011-2013, INFINITI G35 2005-2008, INFINITI G37 2008-2015, INFINITI G37X 2009-2013, INFINITI M35 2007-2010, INFINITI M37 2011-2019, INFINITI M45 2007-2010, INFINITI M56 2011-2019, INFINITI Q40 2014-2015, INFINITI Q60 2014-2015, INFINITI Q70 2011-2019, or INFINITI QX70 2014-2015 for precise fitment and performance. Click on the What This Fits tab for more information.