Oxygen Sensor Replacement Estimate for BMW L7

BMW L7 Oxygen Sensor Replacement costs $169 on average. Following is a breakdown of the labor and parts estimates.

Skip the repair shop - our mechanics come to you
YourMechanic Price
$169 to $179
Labor: $70 -$80
Parts: $99
Average Dealer price
$291
Average Shop price
$207
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
1987 BMW L7L6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$176.98Shop/Dealer Price$229.13 - $328.42
1987 BMW L7L6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$175.00Shop/Dealer Price$226.78 - $324.67
1986 BMW L7L6-3.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$175.00Shop/Dealer Price$226.70 - $324.53
1986 BMW L7L6-3.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$175.00Shop/Dealer Price$226.73 - $324.60
Show example BMW L7 Oxygen Sensor Replacement prices

Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

282 reviews
Mark
6 years of experience
Really liked his thoroughness, he did the job well, cleaned the complete area and did an inspection of the car with details
2008 BMW 528I - WINDOW MOTOR / REGULATOR ASSEMBLY REPLACEMENT (PASSENGER SIDE REAR)
Want Mark's expert advice? Ask your question now. Its free!
137 reviews
Richard
6 years of experience
Great mechanic! Very knowledgeable and fast service!
2006 BMW 325I - WATER PUMP REPLACEMENT
Want Richard'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 - STARTER REPLACEMENT
Want Allen's expert advice? Ask your question now. Its free!
50 reviews
Matthew
6 years of experience
Matthew was a great mechanic and nice guy. Talked to him for a while and he really helped explain everything that was going on with my car. Five stars!
2004 BMW 325I - OIL CHANGE
Want Matthew'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