Oxygen Sensor Replacement Estimate for BMW 323i

BMW 323i Oxygen Sensor Replacement costs $219 on average. Following is a breakdown of the labor and parts estimates.

Skip the repair shop - our mechanics come to you
YourMechanic Price
$198 to $261
Labor: $70 -$80
Parts: $128 -$181
Average Dealer price
$348 to 455
Average Shop price
$243 to 309
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1998 BMW 323iL6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$265.39Shop/Dealer Price$339.65 - $505.25
1999 BMW 323iL6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$205.45Shop/Dealer Price$264.84 - $385.57
2000 BMW 323iL6-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$205.45Shop/Dealer Price$264.76 - $385.44
2000 BMW 323iL6-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$215.40Shop/Dealer Price$277.24 - $405.40
1998 BMW 323iL6-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$265.39Shop/Dealer Price$339.67 - $505.28
1999 BMW 323iL6-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$218.14Shop/Dealer Price$280.58 - $410.73
Show example BMW 323i Oxygen Sensor Replacement prices

Parts required for a BMW 323i Oxygen Sensor Replacement

Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

331 reviews
Jamahl
15 years of experience
Great tech
2005 BMW 325I - BRAKE PADS REPLACEMENT (FRONT)
Want Jamahl's expert advice? Ask your question now. Its free!
308 reviews
Dan
34 years of experience
Dan arrived on time and did his work as expected. I would recommend him.
2000 BMW 323I - CAR AC BELT REPLACEMENT
Want Dan's expert advice? Ask your question now. Its free!
282 reviews
Mark
6 years of experience
He is awesome! We will move our schedule around just so only Mark works on our car!
1999 BMW 323I - BRAKE LIGHT IS NOT WORKING INSPECTION
Want Mark's expert advice? Ask your question now. Its free!
7 reviews
Luis
10 years of experience
Luis was very nice. He called and emailed me to let me know he was in route to the preown car inspection everything about the car was written out in his report. His report and recommendation was made as soon as he finished his reports with no delay . Good job Mr. Luis . Now I hope your auto check was on the money. Thanks
2011 BMW 528I - PRE-PURCHASE CAR INSPECTION
Want Luis'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 BMW Models