Oxygen Sensor Replacement Estimate for Mazda RX-7

Mazda RX-7 Oxygen Sensor Replacement costs $144 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$120 to $187
Labor: $70 -$80
Parts: $50 -$107
Average Dealer price
$194 to 307
Average Shop price
$146 to 217
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CarServiceYourMechanic PriceShop/Dealer Price
1991 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$185.88Shop/Dealer Price$229.37 - $327.18
1990 Mazda RX-7R2-1.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$126.00Shop/Dealer Price$154.59 - $207.53
1989 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$126.00Shop/Dealer Price$154.54 - $207.45
1990 Mazda RX-7R2-1.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$183.74Shop/Dealer Price$226.74 - $322.97
1988 Mazda RX-7R2-1.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$124.46Shop/Dealer Price$152.61 - $204.35
1988 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$124.46Shop/Dealer Price$152.59 - $204.32
1991 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$127.32Shop/Dealer Price$156.26 - $210.20
1989 Mazda RX-7R2-1.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$183.74Shop/Dealer Price$226.76 - $323.00
Show example Mazda RX-7 Oxygen Sensor Replacement prices

Parts required for a Mazda RX-7 Oxygen Sensor Replacement

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Mark
6 years of experience
Mark is very professional, punctual and efficient. He made sure that everything is done right.
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268 reviews
Richard
16 years of experience
Richard did an excellent job of troubleshooting my car's starting problem and was a pleasure to work with.
1986 MAZDA RX-7 - CAR IS NOT STARTING INSPECTION
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Tim
25 years of experience
Tim did the requested oil change and also went over other things that I need to look into. Tim is very knowledgeable..
1998 MAZDA MILLENIA - OIL CHANGE
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Joseph
13 years of experience
Joseph is a reliable and professional mechanic. He explained to me afterwards everything that was done to the car, took a test drive to ensure the work was done properly and even recommended a brake fluid change after he noted weak brakes. I booked him for the brake fluid (conducted 03/03/16) and the car feels like new. I would HIGHLY recommend Joseph.
2005 MAZDA 3 - STRUT ASSEMBLY REPLACEMENT (FRONT)
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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.

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