Best Rear Oxygen Sensors of 2026
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Rear oxygen sensors are an essential component of a vehicle's exhaust system. These sensors are responsible for measuring the oxygen levels in the exhaust gas and sending signals to the vehicle's computer to adjust the air/fuel ratio accordingly. The rear oxygen sensors are located after the catalytic converter and are crucial in ensuring that emissions are reduced to acceptable levels. Without functioning rear oxygen sensors, a vehicle may experience decreased performance, increased fuel consumption, and fail emissions tests. It is important to regularly inspect and replace these sensors to ensure optimal vehicle performance and reduce harmful emissions.
At a Glance: Our Top Picks
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Top 5 Rear Oxygen Sensors
ACAUTO 4Pcs Oxygen Sensor Set
The ACAUTO Oxygen Sensor Kit includes four sensors designed to fit a wide range of Ford and Mazda vehicles. They are compatible with various models, ensuring you can find the right fit for your car. With the ability to replace several OE numbers, you can trust this kit for accurate sensor readings. The high-quality materials used in these sensors enhance their durability and performance, allowing you to rely on precise oxygen level data. Additionally, a fast-acting heater enables the sensors to reach optimal temperatures quickly, improving overall efficiency.
BELKEBIR Oxygen Sensor for Chrysler & Jeep
The BELKEBIR O2 Sensor Set is designed for a perfect fit on various Chrysler, Jeep, Dodge, and Ram models, so you won’t have to worry about compatibility issues. This set replaces several original equipment numbers, making it easy to find the right part for your vehicle. With smart sensing technology, it helps improve your fuel efficiency, saving you money on gas over time. Built with durable platinum and ceramic materials, this sensor can handle extreme conditions, ensuring long-lasting reliability. Overall, it offers a smoother ride by providing quick, accurate data to your engine for better performance and cleaner emissions.
QIJIAUTO O2 Oxygen Sensor for Honda CR-V and More
The QIJIAUTO O2 Sensor is designed to improve your vehicle’s performance by fixing error lights and reducing fuel usage. It helps your car run smoothly without jitters, making your drive safer and more stable. The sensor is built with a special protective layer that guards against damage and poisoning, which means it lasts longer and stays reliable. Thanks to its precise design matching original parts, installation is easier and your engine runs more efficiently, saving you money on fuel. This sensor is a smart choice if you want better acceleration and overall improved vehicle operation.
BELKEBIR 4PCS Oxygen Sensor for Ford and More
The BELKEBIR Oxygen Sensors are designed to perfectly fit a wide range of Ford models and other brands, so you don’t have to worry about compatibility issues. These sensors cover many Ford vehicles from different years, ensuring you find the right match for your ride. They also work with various Mercury, Lincoln, Mazda, Jaguar, and Aston Martin models, adding flexibility if you own multiple vehicles. With this product, you get reliable replacements that fit like the originals, making installation easier and saving you time and hassle.
BELKEBIR Oxygen Sensor for 2007-2011 Honda Civic
The BELKEBIR Civic O2 Sensor is designed to perfectly fit your 2007-2011 Honda Civic models, removing any guesswork during installation and ensuring reliable performance like the original part. It replaces specific OEM part numbers, making it easy for you to find the exact sensor your vehicle needs. This sensor helps improve your car's fuel efficiency, so you spend less money on gas and enjoy longer drives between fill-ups. Built with durable platinum and ceramic materials, it can handle high heat and pressure, providing you with long-lasting, dependable service for your vehicle. With this sensor, your car will also respond faster and run cleaner, giving you a smoother and more enjoyable ride.
Frequently Asked Questions (FAQs)
1. What does the rear oxygen sensor do?
The O2 sensor lets the computer know if the fuel mix is burning rich (not enough oxygen) or lean (too much oxygen). Knowing the ratio of fuel to air allows your vehicle's engine to make any necessary changes to ensure that your car runs like it should.
2. Where is the rear oxygen sensor located?
The oxygen sensor helps keep that balance in check. The sensor is typically located on the passenger side of the car, mounted directly onto the exhaust pipe near the catalytic converter.
3. Do you need rear O2 sensors?
Yes, you can drive a car without a downstream o2 sensor. This means that it can no longer monitor for proper emissions after this point and your engine will run a rich fuel mixture, so fuel economy will drop.
4. How much is a rear O2 sensor?
If you choose to have a professional replace your car's oxygen sensor, you can usually expect to pay somewhere between $200 and $500 to get the job done.
During our rear oxygen sensor research, we found 24 rear oxygen sensor products and shortlisted 5 quality products. We collected and analyzed 5,854 customer reviews through our big data system to write the rear oxygen sensors list. We found that most customers choose rear oxygen sensors with an average price of $33.26.
The rear oxygen sensors are available for purchase. We have researched hundreds of brands and picked the top brands of rear oxygen sensors, including ACAUTO, BELKEBIR, QIJIAUTO. The seller of top 1 product has received honest feedback from 144 consumers with an average rating of 4.9.
Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.