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Audi Oxygen Sensor

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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # APOS0081
Jetta,A3,A3 Quattro,A4,A4 Quattro,A5,A5 Quattro,A6,A6 Quattro,A8 Quattro,Beetle,CC,Eos,GTI,Golf,Passat,Q3,Q3 Quattro,Q5,Q7
4.6(313)
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43.99
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Upstream O2 Oxygen Sensor

Upstream O2 Oxygen Sensor

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Part # APOS0437
Elantra,Optima,Sonata,500,500L,A3 Sportback e-tron,A4,A4 Quattro,A5 Quattro,A6,A6 Quattro,A7 Quattro,A8 Quattro,Accent,Dart,Forte,Forte Koup,Genesis Coupe,Ioniq,Niro
4.6(314)
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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # APOS0114
Jetta,A3,A4,A4 Quattro,A5,A5 Quattro,A6,A6 Quattro,A7 Quattro,A8 Quattro,Beetle,Bronco Sport,CC,EcoSport,F-150,Golf,Panamera,Passat,Phaeton,Q5
4.6(313)
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$
61.99
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Downstream O2 Oxygen Sensor

Downstream O2 Oxygen Sensor

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Part # APOS0573
Jetta,A8 Quattro,Beetle,Passat
4.6(314)
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50.99
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2 Pcs Downstream O2 Oxygen Sensor

2 Pcs Downstream O2 Oxygen Sensor

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Part # APOS0418
A4 Quattro,A5 Quattro,A6 Quattro,A7 Quattro,A8 Quattro,Q5,S4,S5,SQ5
5.0(2)
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$
46.99
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2 Pcs O2 Oxygen Sensor

2 Pcs O2 Oxygen Sensor

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Part # APOS0887
Jetta,A3,Beetle,CC,Eos,GTI,Golf,Passat,Touareg
4.6(289)
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74.99
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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # APOS1093
Jetta,A3,A3 Quattro,A8 Quattro,AMG GT 43,AMG GT 53,Atlas,Atlas Cross Sport,Beetle,CLS450,CLS53 AMG,E53 AMG,GTI,Golf R,Passat,RS7,S3,S6,S7,S8
4.6(289)
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49.99
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Upstream O2 Oxygen Sensor

Upstream O2 Oxygen Sensor

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Part # APOS0005
Edge,Escape,Explorer,F-150,F-250 Super Duty,F-350 Super Duty,Focus,Fusion,Mustang,Aviator,Cayenne,Continental,Expedition,GT,MKC,MKT,MKX,MKZ,Nautilus,Navigator
4.6(313)
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$
65.99
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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # APOS0088
Jetta,A3,A4,A4 Quattro,A6 Quattro,Beetle,CC,Eos,GTI,Golf,Golf R,Passat,Q7,R8,TT,TT Quattro,TTS Quattro,Touareg
4.6(289)
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32.99
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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # OS165
Jetta,A4,A4 Quattro,A6 Quattro,A8 Quattro,CC,Cayenne,GTI,Passat,Q7,R8,Touareg
4.6(313)
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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # OS139
Jetta,325Ci,325i,545i,645Ci,A8 Quattro,Beetle,Cayenne,Golf,Passat,TT Quattro
4.6(314)
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50.99
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Upstream Downstream O2 Oxygen Sensor

Upstream Downstream O2 Oxygen Sensor

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Part # APOS0378
A4,A4 Quattro,A6,A6 Quattro
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23.99
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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # APOS0153
Jetta,A3,A4,A4 Quattro,Beetle,Golf,Passat,Rabbit,S8,TT Quattro,Touareg
4.6(289)
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$
54.99
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Upstream O2 Oxygen Sensor

Upstream O2 Oxygen Sensor

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Part # APOS0632
A3,A3 Quattro,Atlas,Atlas Cross Sport,GTI,Golf R,S3,TT Quattro,TTS Quattro,Tiguan
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$
86.99
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4 Pcs Upstream & Downstream O2 Oxygen Sensor

4 Pcs Upstream & Downstream O2 Oxygen Sensor

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Part # OS087PC
A4,A4 Quattro,A6,A6 Quattro,Allroad Quattro,Passat,S4,S6
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$
81.99
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Downstream O2 Oxygen Sensor

Downstream O2 Oxygen Sensor

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Part # OS051
Jetta,Golf,RS5,Rabbit,S5,S6,S8
4.6(289)
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$
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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # APOS0023
A8 Quattro,CC,Cayenne,Passat,RS7,S6,S7,S8,Tiguan
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32.99
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Downstream O2 Oxygen Sensor

Downstream O2 Oxygen Sensor

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Part # APOS0363
A4 Quattro,A5 Quattro,A6 Quattro,A7 Quattro,A8 Quattro,Q5,S4,S5,SQ5
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$
23.99
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2 Pcs Upstream & Downstream O2 Oxygen Sensor

2 Pcs Upstream & Downstream O2 Oxygen Sensor

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Part # OS218
A4,A4 Quattro,A6,A6 Quattro,Allroad Quattro,Passat,S4,S6
5.0(1)
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$
45.99
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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # APOS0620
A4 Quattro,A5 Quattro,A6,A6 Quattro,A7 Quattro,Q5,Q7,S4,S5,SQ5
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$
52.99
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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # APOS0112
A4,A4 Quattro,A8 Quattro,Cayenne,Continental,EuroVan,TT,TT Quattro,Touareg
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$
50.99
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Upstream O2 Oxygen Sensor

Upstream O2 Oxygen Sensor

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Part # APOS0723
Jetta,A1
4.6(289)
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$
52.99
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Upstream O2 Oxygen Sensor

Upstream O2 Oxygen Sensor

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Part # APOS0619
Jetta,A4 Quattro,A4 allroad,A5 Quattro,A5 Sportback,Beetle,Continental,Passat,Q5,Q7
4.6(289)
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$
89.99
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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # APOS1068
A3,A3 Quattro,A8 Quattro,Atlas,Atlas Cross Sport,GTI,Golf,Golf Alltrack,Golf R,Golf SportWagen,R8,S3,TT Quattro,TTS Quattro
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$
31.99
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Downstream O2 Oxygen Sensor

Downstream O2 Oxygen Sensor

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Part # APOS0603
A3,A3 Quattro,Atlas,Atlas Cross Sport,GTI,Golf,Golf Alltrack,Golf SportWagen,S3,TT Quattro,TTS Quattro
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$
39.99
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4 Pcs Upstream & Downstream O2 Oxygen Sensor

4 Pcs Upstream & Downstream O2 Oxygen Sensor

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Part # APOS1969
A6 Quattro,Allroad Quattro
5.0(1)
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$
93.99
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O2 Oxygen Sensor

O2 Oxygen Sensor

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Part # APOS0795
Jetta,A3 Quattro,A6 Quattro,A6 allroad,A7 Sportback,A8 Quattro,Arteon,GTI,Golf R,RS5,RS5 Sportback,S3,S4,S5,S5 Sportback,S6,S7,S7 Sportback,SQ5,SQ5 Sportback
4.6(289)
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$
24.99
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2 Pcs Upstream & Downstream O2 Oxygen Sensor

2 Pcs Upstream & Downstream O2 Oxygen Sensor

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Part # APOS0888
A4,A4 Quattro,A5,A5 Quattro,A6,A6 Quattro,Q5,allroad
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$
102.99
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Downstream O2 Oxygen Sensor

Downstream O2 Oxygen Sensor

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Part # APOS1081
Jetta,A3 Sportback e-tron
4.6(289)
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$
20.99
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2 Pcs O2 Oxygen Sensor

2 Pcs O2 Oxygen Sensor

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Part # APOS0700
Jetta,A3,Beetle,Golf,Passat,TT Quattro
4.6(289)
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$
113.99
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1-30 of 298 Results

What does the O2 sensor do in a car?

You can find an oxygen (O2) sensor in your vehicle's exhaust system. It looks similar to a spark plug and is the same size. It ensures that the oxygen in your car’s engine or the air-fuel ratio is optimal. The oxygen sensor exists in two different settings concerning the converter. You can arrange it before the converter or after the converter. Setting it before the converter is called upstream, and setting it after the converter is called downstream. The oxygen sensor gets its data and communicates within the system with the help of an electrical signal or a voltage signal. It sends the data to the central computer located in the engine, and the computer ensures that the mixture of oxygen and fuel is in optimal amounts to keep the engine running in top condition.

The oxygen sensors in your car are not such an item that they need to be replaced regularly without any issue. Unlike the air filters or the oil in your car, you only have to replace the oxygen sensors when they malfunction. If the oxygen sensor fails and does not work properly, the vehicle won't be able to correctly tell the ratio of air and fuel, which can also lead to excessive emissions from the vehicle. This failure to work seamlessly can also damage other components of your car, such as the catalytic converter.

How to tell a faulty O2 sensor?

When an  O2 sensor in a vehicle becomes faulty or deteriorates, it can exhibit several symptoms including:

  1. Increased emissions: Higher pollution output, potential emission test failure.
  2. Check engine light: Illuminates when o2 sensor trouble codes are detected.
  3. Rough idling: Unsteady engine idling and occasional stalling.
  4. Failed emissions test: The vehicle may not pass emissions testing.
  5. Delayed engine response: Slower acceleration when pressing the gas pedal.
  6. Excessive fuel consumption: Increased fuel usage, resulting in higher costs.
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