Oxygen Sensor Replacement Estimate for BMW 740Li

BMW 740Li Oxygen Sensor Replacement costs $477 on average. Following is a breakdown of the labor and parts estimates.

Skip the repair shop - our mechanics come to you
YourMechanic Price
$445 to $543
Labor: $245 -$280
Parts: $200 -$263
Average Dealer price
$725 to 851
Average Shop price
$541 to 620
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
2011 BMW 740LiL6-3.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$460.84Shop/Dealer Price$603.74 - $832.32
2011 BMW 740LiL6-3.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$523.81Shop/Dealer Price$682.87 - $958.99
2012 BMW 740LiL6-3.0L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$523.81Shop/Dealer Price$682.59 - $958.51
2012 BMW 740LiL6-3.0L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$456.85Shop/Dealer Price$599.02 - $824.82
Show example BMW 740Li Oxygen Sensor Replacement prices

Parts required for a BMW 740Li Oxygen Sensor Replacement

Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

268 reviews
Richard
16 years of experience
He was very professional, nice and fast! He even took the time out to throughly inspect my vehicle further for minor issues and as well as placed some quotes in for me so that I can handle my issues right away!
2002 BMW X5 - FAN CLUTCH REPLACEMENT
Want Richard's expert advice? Ask your question now. Its free!
218 reviews
Brandon
13 years of experience
Brandon came on time and did all work as needed.
1997 BMW Z3 - AC IS NOT WORKING INSPECTION
Want Brandon's expert advice? Ask your question now. Its free!
129 reviews
Allen
31 years of experience
Allen made my day! showed up earlier than actual appointment time and he fixed everything very quickly. He is so kind to work with and very knowledgeable about what he does. Very honest and strong for detail. he even cleaned my corrosive battery entrance like he treats his car and explained everything. Also he kindly advises what's next issue that I have to concern in the car.
2007 BMW 328XI - CAR STARTER REPAIR
Want Allen's expert advice? Ask your question now. Its free!
16 reviews
Mike
11 years of experience
Thank you Mike for going Sunday and fixing my car. Great mechanic!
2005 BMW X3 - SERPENTINE/DRIVE BELT REPLACEMENT
Want Mike'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