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.

Skip the repair shop - our mechanics come to you
YourMechanic Price
$120 to $187
Labor: $70 -$80
Parts: $50 -$107
Average Dealer price
$194 to 307
Average Shop price
$146 to 217
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1989 Mazda RX-7R2-1.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$127.06Shop/Dealer Price$155.84 - $209.52
1991 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 - Rear/Lower/Downstream ReplacementYourMechanic Price$183.74Shop/Dealer Price$226.72 - $322.93
1990 Mazda RX-7R2-1.3L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$183.74Shop/Dealer Price$226.74 - $322.97
1989 Mazda RX-7R2-1.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$185.88Shop/Dealer Price$229.39 - $327.20
1990 Mazda RX-7R2-1.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$127.06Shop/Dealer Price$155.83 - $209.51
1988 Mazda RX-7R2-1.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$124.71Shop/Dealer Price$153.00 - $204.99
1989 Mazda RX-7R2-1.3L TurboService 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

Meet some of our expert Mazda mechanics

Real customer reviews from Mazda owners like you.

274 reviews
Noe
31 years of experience
Fantastic service!! Highly recommend this to everyone!!
2003 MAZDA PROTEGE - SPARK PLUG REPLACEMENT
Want Noe's expert advice? Ask your question now. Its free!
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
Want Richard's expert advice? Ask your question now. Its free!
61 reviews
Chad
11 years of experience
Chad was polite and knows his trade. He finished the job timely basis. I will recommend him to my other friends if they need any automotive works. Only thing I will mention here that he broke the handle of oil deep stick and did not tell me about it. I found the broken piece after he left my place. I hope to find another deep stick otherwise I have to work with the broken one.
2002 MAZDA 626 - VALVE COVER GASKET REPLACEMENT
Want Chad's expert advice? Ask your question now. Its free!
59 reviews
Steven
16 years of experience
Steven turned up on time, well presented, and completed the job as requested. I will use him next time I need the car services.
2007 MAZDA CX-7 - OIL CHANGE
Want Steven's expert advice? Ask your question now. Its free!

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 Mazda Models