Oxygen Sensor Replacement Estimate for BMW 540i

BMW 540i Oxygen Sensor Replacement costs $212 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$178 to $250
Labor: $70 -$80
Parts: $108 -$170
Average Dealer price
$309 to 433
Average Shop price
$219 to 296
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CarServiceYourMechanic PriceShop/Dealer Price
1999 BMW 540iV8-4.4LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$207.11Shop/Dealer Price$266.80 - $388.70
1995 BMW 540iV8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$206.47Shop/Dealer Price$266.11 - $387.61
2002 BMW 540iV8-4.4LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$204.58Shop/Dealer Price$263.67 - $383.70
2000 BMW 540iV8-4.4LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$250.25Shop/Dealer Price$320.81 - $475.11
1997 BMW 540iV8-4.4LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$253.65Shop/Dealer Price$324.99 - $481.80
1999 BMW 540iV8-4.4LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$253.65Shop/Dealer Price$324.97 - $481.75
1994 BMW 540iV8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$187.48Shop/Dealer Price$242.42 - $349.70
2001 BMW 540iV8-4.4LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$204.58Shop/Dealer Price$263.75 - $383.82
Show example BMW 540i Oxygen Sensor Replacement prices
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Parts required for a BMW 540i Oxygen Sensor Replacement

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344 reviews
Robert
26 years of experience
A real pleasure to have Robert work on my car. A very good mechanic fixed all my problem Thank you.
2003 BMW 540I - BATTERY REPLACEMENT
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266 reviews
Grzegorz
36 years of experience
Grzegorz was helpful and professional. He fixed the problem and answered all my questions. I would absolutely recomend him.
1997 BMW 328I - NEED TO REPLACE THE IGNITION LOCK HOUSING AND LOCK CYLINDER. WHEEL IS LOCKED INTO PLACE. KEY IS TURNING.
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223 reviews
Joe
38 years of experience
Joe was awesome. Had a difficult BMW liquid cooled alternator to replace. Joe did a great job. Very informative and thorough. I will definitely request him again for next repair.
2003 BMW 540I - ALTERNATOR REPLACEMENT
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Robert
16 years of experience
Robert was incredibly thorough and did an excellent job. He was very friendly and professional. I will be using his services again in the future.
2000 BMW 540I - 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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