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
1989 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$127.06Shop/Dealer Price$155.84 - $209.52
1989 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$183.74Shop/Dealer Price$226.76 - $323.01
1986 Mazda RX-7R2-1.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$123.45Shop/Dealer Price$151.36 - $202.36
1988 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$123.45Shop/Dealer Price$151.38 - $202.39
1991 Mazda RX-7R2-1.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$185.88Shop/Dealer Price$229.39 - $327.20
1991 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$127.06Shop/Dealer Price$155.83 - $209.51
1990 Mazda RX-7R2-1.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$186.42Shop/Dealer Price$230.13 - $328.40
1991 Mazda RX-7R2-1.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$126.00Shop/Dealer Price$154.59 - $207.52
Show example Mazda RX-7 Oxygen Sensor Replacement prices

Parts required for a Mazda RX-7 Oxygen Sensor Replacement

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268 reviews
Richard
16 years of experience
Richard arrived with parts in hand and in an hour had replaced both the fuel pump and fuel filter. Car is running great now thanks to Richard. What a pro!!!
1986 MAZDA RX-7 - FUEL PUMP REPLACEMENT
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Enrique
16 years of experience
Rick was punctual and worked quickly. He made sure I understood what he was doing and what didn't need to be done. He was very professional.
2006 MAZDA TRIBUTE - SERPENTINE/DRIVE BELT REPLACEMENT
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180 reviews
Peter
31 years of experience
It was efficient and he diagnosed the problem correctly. Rate is 5
2005 MAZDA TRIBUTE - INSPECTION / DIAGNOSTICS
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136 reviews
Casey
19 years of experience
Casey is a personable, capable mechanic who takes the time to explain what's happening and why, as well as what your options are.
2006 MAZDA MX-5 MIATA - CAR IS NOT STARTING INSPECTION
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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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