Oxygen Sensor Replacement Estimate for Mazda RX-7

Mazda RX-7 Oxygen Sensor Replacement costs $145 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$119 to $187
Labor: $70 -$80
Parts: $49 -$107
Average Dealer price
$191 to 307
Average Shop price
$145 to 217
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CarServiceYourMechanic PriceShop/Dealer Price
1990 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$185.88Shop/Dealer Price$229.37 - $327.18
1989 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$183.74Shop/Dealer Price$226.76 - $323.01
1989 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$127.27Shop/Dealer Price$156.13 - $210.00
1990 Mazda RX-7R2-1.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$183.74Shop/Dealer Price$226.74 - $322.97
1989 Mazda RX-7R2-1.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$128.35Shop/Dealer Price$157.47 - $212.13
1991 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$128.35Shop/Dealer Price$157.46 - $212.11
1989 Mazda RX-7R2-1.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$186.42Shop/Dealer Price$230.13 - $328.40
1991 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$183.74Shop/Dealer Price$226.76 - $323.00
Show example Mazda RX-7 Oxygen Sensor Replacement prices
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Parts required for a Mazda RX-7 Oxygen Sensor Replacement

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Jason was awesome and did the service extremely competently, explaining everything to me. I am very happy with his work.
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Richard
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Joe
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Joe was professional, early for the appointment and honest about the mechanical needs/pricing.
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Brandon
13 years of experience
Brandon is very knowledgeable and a honest person . He made it easy for me to understand. How brakes work's. To make a long story short Brandon is my mechanic from now on and I will be following up with his subjections to keep Miss Bessie running smoothly. Thanks Brandon
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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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