Oxygen Sensor Replacement Estimate for BMW 740i

BMW 740i Oxygen Sensor Replacement costs $266 on average. Following is a breakdown of the labor and parts estimates.

Skip the repair shop - our mechanics come to you
YourMechanic Price
$178 to $543
Labor: $70 -$280
Parts: $108 -$263
Average Dealer price
$308 to 851
Average Shop price
$218 to 620
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
1997 BMW 740iV8-4.4LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$208.00Shop/Dealer Price$267.91 - $390.47
1995 BMW 740iV8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$246.40Shop/Dealer Price$316.83 - $464.94
1994 BMW 740iV8-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$191.11Shop/Dealer Price$247.64 - $354.22
2011 BMW 740iL6-3.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$523.81Shop/Dealer Price$682.72 - $958.74
1994 BMW 740iV8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$193.26Shop/Dealer Price$250.30 - $358.48
2000 BMW 740iV8-4.4LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$264.87Shop/Dealer Price$338.99 - $504.20
2000 BMW 740iV8-4.4LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$208.64Shop/Dealer Price$268.86 - $392.01
2001 BMW 740iV8-4.4LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$261.27Shop/Dealer Price$334.61 - $497.20
Show example BMW 740i Oxygen Sensor Replacement prices

Parts required for a BMW 740i Oxygen Sensor Replacement

Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

160 reviews
Carlos
11 years of experience
Great work
1997 BMW 528I - TRUNK DOES NOT LOCK OR OPEN INSPECTION
Want Carlos's expert advice? Ask your question now. Its free!
113 reviews
Michael
22 years of experience
My name is Brian Jones, and first, I would like to say, I'am a Veteran and I hope that still holds some weight in my country...Having said that I would never lie or mislead my fellow country men ...The guy was hands down on point from start to finish...As a BMW owner we love our cars but Dealer prices hurt...Well Micheal came to my house totally trusted him changed out my motor mounts half dealer cost .....and now my car is smooth as glass they even take pictures of your parts, and every detail of your car, there is nothing to loose, and all to gain by calling them ....I have a detailed report of a few minor things I need to replace all included with your service ....I'm going to use them from now on
2005 BMW 525I - ENGINE MOUNT REPLACEMENT (FRONT)
Want Michael's expert advice? Ask your question now. Its free!
19 reviews
Daniel
13 years of experience
Daniel did an awesome job in replacing the radiator and finding the problem with the 'Check Engine soon' light in my car. Highly professional and experienced person. Would definitely recommend.
2004 BMW 325I - RADIATOR REPLACEMENT
Want Daniel'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