Oxygen Sensor Replacement Estimate for Infiniti QX4

Infiniti QX4 Oxygen Sensor Replacement costs $174 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$147 to $258
Labor: $70 -$144
Parts: $77 -$114
Average Dealer price
$247 to 396
Average Shop price
$179 to 292
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CarServiceYourMechanic PriceShop/Dealer Price
2003 Infiniti QX4V6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$176.35Shop/Dealer Price$228.35 - $327.17
2002 Infiniti QX4V6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$174.38Shop/Dealer Price$226.01 - $323.44
2003 Infiniti QX4V6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$246.93Shop/Dealer Price$322.98 - $448.04
1999 Infiniti QX4V6-3.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$158.46Shop/Dealer Price$206.87 - $288.99
1998 Infiniti QX4V6-3.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$160.00Shop/Dealer Price$208.72 - $291.95
1998 Infiniti QX4V6-3.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$153.00Shop/Dealer Price$199.15 - $280.45
1997 Infiniti QX4V6-3.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$160.38Shop/Dealer Price$209.35 - $292.97
2001 Infiniti QX4V6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$246.93Shop/Dealer Price$323.11 - $448.27
Show example Infiniti QX4 Oxygen Sensor Replacement prices

Parts required for a Infiniti QX4 Oxygen Sensor Replacement

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471 reviews
Peter
38 years of experience
Peter was terrific, knowledgable, prompt and professional. He answered my questions, explained things thoroughly and made me feel valued as a customer. I will return to him for all my work through YourMechanic.
2002 INFINITI QX4 - AC COMPRESSOR REPLACEMENT
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287 reviews
Steven
9 years of experience
Fast work. Excellent. Far quicker more convenient and less expensive than taking the car to a shop.
2004 INFINITI G35 - THERMOSTAT REPLACEMENT
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256 reviews
Jay
32 years of experience
Jay was very patient and professional. Jay took the time for me to understand what was wrong with my recent purchased used SUV that I bought. I will definitely recommend Jay. I called the center once and the representative was too very professional and answered all my questions. My whole experience was beyond all expectations and my experience with YourMechanic leaves as returning customer.
2003 INFINITI QX4 - OXYGEN SENSOR REPLACEMENT (REAR/LOWER/DOWNSTREAM)
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71 reviews
Blake
8 years of experience
Excellent! Was prompt, very knowledgable and professional. Even went the extra step and went to pick up and fix my issue when I had only booked him for a diagnosis. Did a second quote, paid, done. Very efficient and friendly. Will 100% use him again for my future car service needs.
2003 INFINITI G35 - OTHER INSPECTIONS
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All about Oxygen Sensor Replacement

With each new model year, manufacturers are adding more oxygen sensors to better manage engine operation. Some high performance engines have an oxygen sensor for each cylinder as well as one for the rear of each catalytic convertor. The sensors are located either underneath the hood or underneath the car. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. The front (upstream) sensors measure the amount of oxygen in the exhaust system. The purpose of the front oxygen sensor(s) is to measure how rich or lean the gases are as the gases exit the combustion chamber. Depending upon whether the exhaust gas is lean (high in oxygen content) or rich (low in oxygen content), the amount of fuel entering the engine is adjusted by the engine management computer to try and maintain an ideal mixture that produces the lowest emissions output from the catalytic convertor. Rear (downstream) sensors are located behind the catalytic converter. The purpose of the rear oxygen sensor(s) is to monitor the oxygen content of the exhaust gases leaving the catalytic convertor. If one or more of the oxygen sensors are faulty, your car may not pass the emissions test. If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter.

Oxygen Sensor Replacement Estimates for Popular Infiniti Models