Oxygen Sensor Replacement Estimate for Buick Century

Buick Century Oxygen Sensor Replacement costs $112 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$95 to $160
Labor: $70 -$80
Parts: $25 -$80
Average Dealer price
$143 to 254
Average Shop price
$115 to 184
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CarServiceYourMechanic PriceShop/Dealer Price
1985 Buick CenturyV6-3.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$97.22Shop/Dealer Price$118.54 - $149.85
1990 Buick CenturyL4-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$106.31Shop/Dealer Price$129.97 - $168.15
1991 Buick CenturyV6-3.3LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$107.84Shop/Dealer Price$131.84 - $171.12
1988 Buick CenturyL4-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$96.72Shop/Dealer Price$117.96 - $148.92
1988 Buick CenturyV6-2.8LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$108.55Shop/Dealer Price$132.72 - $172.53
1998 Buick CenturyV6-3.1LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$140.03Shop/Dealer Price$172.05 - $235.46
1986 Buick CenturyL4-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$97.35Shop/Dealer Price$118.79 - $150.25
1988 Buick CenturyL4-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$107.84Shop/Dealer Price$131.88 - $171.20
Show example Buick Century Oxygen Sensor Replacement prices
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Parts required for a Buick Century Oxygen Sensor Replacement

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471 reviews
Peter
38 years of experience
Peter was a little late he said because of construction. I have an appointment to get the Alarm removed as he suggested and I will take the battery back but until then I won't know if this will solve the problem.
1994 BUICK CENTURY - CAR IS NOT STARTING INSPECTION
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268 reviews
Richard
16 years of experience
Very knowledgeable and helpful
2002 BUICK CENTURY - CHECK ENGINE LIGHT IS ON INSPECTION
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73 reviews
Danny
6 years of experience
Had a coolant leak. Needed an engine gasket and thermostat replaced. Also needed a flush of the coolant system and oil change. It was a very long job and Danny was dedicated to getting it done. He also gave me other automotive advice and answered all of my questions thoroughly. The car is no longer overheating or leaking. He did a great job. I would definitely use this service again.
1998 BUICK CENTURY - CLEAR FLUID IS LEAKING INSPECTION
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59 reviews
Terry
20 years of experience
He was early, knowledgeable and fast!
2003 BUICK CENTURY - WINDOW MOTOR / REGULATOR ASSEMBLY REPLACEMENT (PASSENGER SIDE FRONT)
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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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