Loading

How do I find my oxygen sensor part number?

To find your oxygen sensor part number, you'll need to locate the specific sensor in your vehicle and check the part number printed on it. This information can then be used to purchase a replacement sensor that matches your car's make, model, and year. Let's go through the steps to help you identify your oxygen sensor part number.


Locate the Oxygen Sensor


The oxygen sensors in your vehicle are typically located in the exhaust system, either before or after the catalytic converter. They are responsible for monitoring the air-fuel ratio and sending this information to the engine control unit (ECU) to optimize engine performance and emissions.



  • Consult your vehicle's repair manual or owner's manual to determine the exact location of the oxygen sensors.

  • Visually inspect the exhaust system to locate the sensors, which are usually cylindrical in shape and have electrical connectors attached to them.

  • Make note of the sensor's position, as there may be multiple sensors in your vehicle.


Once you've identified the oxygen sensor, you can proceed to finding the part number.


Locate the Part Number


The oxygen sensor part number is typically printed directly on the sensor itself. This information may be located on a label or stamped into the metal casing of the sensor.



  • Carefully inspect the oxygen sensor, looking for a part number or other identifying information.

  • The part number may be in the format of a series of letters and numbers, such as "234-4567".

  • If the part number is not visible on the sensor, you may need to consult your vehicle's repair manual or contact the manufacturer for assistance.


With the oxygen sensor part number in hand, you can now use this information to purchase a replacement sensor that is compatible with your vehicle.


Verify Compatibility


Before purchasing a replacement oxygen sensor, it's important to verify that the part number matches your vehicle's make, model, and year. This information can be found in your vehicle's repair manual or by consulting an online parts catalog.



  • Provide the oxygen sensor part number to the parts retailer or search for it in an online catalog.

  • Confirm that the part is compatible with your specific vehicle by cross-referencing the make, model, and year.

  • If the part number does not match or the retailer is unsure of the compatibility, do not purchase the sensor, as it may not fit properly or function correctly in your vehicle.


By following these steps, you can accurately identify the oxygen sensor part number for your vehicle and ensure that you purchase the correct replacement part.

Are all my O2 sensors the same?


Each oxygen sensor has its own unique characteristics specific to its application. One generic oxygen sensor that may appear to be the same cannot be used to replace a range of these specific oxygen sensors.



What is the model number of the oxygen sensor?


Click for more details on each product.

Model numberSensing principleDetection range
KE-12F3LFGalvanic cell type0-30%
KE-25LF KE-25F3LFGalvanic cell type0-30%
KE-50LFGalvanic cell type0-30%
KE-25F3LFMGalvanic cell type0-100%



How are O2 sensors numbered?


Bank 1 is always on cylinder 1 – 3 – 5 – 7 – 9 – 11 and bank 2 is always on cylinder 2 – 4 – 6 – 8 – 10 – 12. What is Sensor 1 & 2? The sensor number is telling us where on the exhaust system the O2 sensor or Exhaust temperature sensor is mounted.



Should I replace all four O2 sensors at once?


Do I need to replace all of the sensors at once? It is best to replace O2 sensors in pairs. For example, if you replace the downstream left sensor, you should also replace the downstream right.



What size is my O2 sensor?


7/8ths is the Imperial equivalent of decimal 22mm. O2 sensors are all pretty much standard in size.



How do I find my O2 sensor?


Oxygen sensors are typically located in the exhaust system. In most modern vehicles, you can find two sensors near the motor and two sensors near your catalytic converter. An oxygen sensor resembles a spark plug.



Are O2 sensors universal size?


One Oxygen Sensor does not fit all! Every vehicle is unique with its engine design, capacity, coding and manufacturing period, and therefore requires specific oxygen sensors.



How do I know what version of oxygen I have?


Hi there, you can go to settings options in your phone, scroll down to find about phone option, click on it page will open and you will the OxygenOS version under Build number and Android version for Android number.



How do I know which oxygen sensor I need?


Check your vehicle's manual: Your vehicle's manual should have information on the type of oxygen sensor you need. Use an OBD2 code reader: An OBD2 code reader can help you determine which oxygen sensor is faulty by reading the error code.



Is there a difference between bank 1 and bank 2 O2 sensors?


The upstream sensors are located on the exhaust manifold (nearest to the engine) and the down stream oxygen sensors are located after the catalytic converters (farther away from the engine). Bank 1 is the driver side and bank 2 is the passenger side.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.