Oxygen Sensor Replacement Estimate for Lexus GS400

Lexus GS400 Oxygen Sensor Replacement costs $199 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$195 to $213
Labor: $70 -$88
Parts: $125
Average Dealer price
$343 to 352
Average Shop price
$239 to 248
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CarServiceYourMechanic PriceShop/Dealer Price
1999 Lexus GS400V8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$204.89Shop/Dealer Price$264.02 - $384.24
1999 Lexus GS400V8-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$209.39Shop/Dealer Price$270.57 - $390.93
2000 Lexus GS400V8-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$209.39Shop/Dealer Price$270.49 - $390.78
1998 Lexus GS400V8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$202.39Shop/Dealer Price$260.98 - $379.39
2000 Lexus GS400V8-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$204.89Shop/Dealer Price$264.04 - $384.28
1998 Lexus GS400V8-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$211.89Shop/Dealer Price$273.55 - $395.67
Show example Lexus GS400 Oxygen Sensor Replacement prices

Parts required for a Lexus GS400 Oxygen Sensor Replacement

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Patrick
27 years of experience
Patrick was great, he informed me of everything he was doing. He took pictures of the progress. Very friendly and I've already recommend him and the service to friends. Very convenient and the price was a fair and worth it. I will definitely call upon him the next time I need work done!
1997 LEXUS ES300 - TIMING BELT REPLACEMENT
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Very professional, courteous and thorough...... He did an excellent job! Since then I have been recommending 'The Mechanic'
2013 LEXUS RX350 - OIL CHANGE
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27 years of experience
Manuel was great. He has an appointment earlier in the day open up so he called to see if that would work for me -- which was greatly appreciated! He was very quick and incredibly professional.
2010 LEXUS HS250H - OIL CHANGE
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20 years of experience
He coordinated with me ahead of time. Friendly, knowledgeable. Gave me peace of mind in the used car I am buying.
2010 LEXUS RX350 - PRE-PURCHASE CAR 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.

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