Oxygen Sensor Replacement Estimate for BMW 840Ci

BMW 840Ci Oxygen Sensor Replacement costs $217 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$198 to $268
Labor: $70 -$88
Parts: $128 -$180
Average Dealer price
$348 to 463
Average Shop price
$243 to 317
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CarServiceYourMechanic PriceShop/Dealer Price
1997 BMW 840CiV8-4.4LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$208.00Shop/Dealer Price$267.91 - $390.47
1996 BMW 840CiV8-4.4LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$205.45Shop/Dealer Price$264.84 - $385.57
1994 BMW 840CiV8-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$217.01Shop/Dealer Price$280.01 - $406.01
1995 BMW 840CiV8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$217.01Shop/Dealer Price$280.05 - $406.08
1997 BMW 840CiV8-4.4LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$264.87Shop/Dealer Price$339.02 - $504.25
1995 BMW 840CiV8-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$219.65Shop/Dealer Price$283.25 - $411.20
1994 BMW 840CiV8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$220.31Shop/Dealer Price$284.25 - $412.82
1996 BMW 840CiV8-4.4LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$261.27Shop/Dealer Price$334.61 - $497.20
Show example BMW 840Ci Oxygen Sensor Replacement prices

Parts required for a BMW 840Ci Oxygen Sensor Replacement

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Robert
26 years of experience
Excellent job once again. Robert was on-time, finished ahead of schedule while keeping me updated on the progress and cleaned up afterwards. I will definitely recommend him to my friends for any car service/repair work in the future.
2008 BMW 650I - BRAKE ROTOR/DISC REPLACEMENT (FRONT, REAR)
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Jason
12 years of experience
Jason was very knowledgeable and deliberate. He did an inspection to verify the complicated problem and the proceeded to acquire the OEM part required and credited me the inspection fee as he completed the repair. I would highly recommend Jason on all types of repairs and service.
2006 BMW 325I - DOOR DOES NOT LOCK OR OPEN INSPECTION
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Jay
32 years of experience
I can't ask for anything more for the professional job that Jay had done on my car, replacing the front struts on my BMW. Very friendly from the start and without hesitation he answered all questions I have about the work to be done which boosted my confidence and resulted in an excellent job. Well done and thank you so much, Jay! Very glad I found YourMechanic to save me a fortune that dealer shop was charging me for the same work.
2009 BMW 328I - STRUT ASSEMBLY REPLACEMENT (FRONT)
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Pete
11 years of experience
Pete was here on time, very knowledgeable of my BMW, and made me feel comfortable and confident that he would make the repairs correctly. I also was very impressed with his honesty, and he exceeded my expectations. I am very pleased and will call on him (you) next time. I will definitely recommend his service to friends.
2005 BMW 645CI - CHECK ENGINE LIGHT IS ON 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.

Oxygen Sensor Replacement Estimates for Popular BMW Models