Engine & Equipment

TOP 3 Best Oxygen Sensors


When you experience a bad oxygen sensor, your car will run less efficiently and in case you won’t replace this worn-out part, it can bring even more damage to your vehicle. Poor idle or erratic jerking at steady throttle are just a few problems it may cause. The last but not the least thing is the high fuel consumption — that’s why we have a finely made oxygen sensor is so important. 

The oxygen sensor is must-have for any vehicle — the part is mounted in the exhaust manifold to check how much unburned oxygen exits your vehicle’s engine. It’s one of the best way to gauge the fuel mixture. It all ends in your four-wheel friend’s computer so it knows should it burn less or more oxygen. 

Can you drive a vehicle with a bad oxygen sensor? Well, technically yes. Automotive OS would be displaying different calculations, however, driving with a poorly functioning auto part is like avoiding dentists, especially when the oxygen sensor is not the least piece in your vehicle.

If there’s a light on the engine or you see bad gas mileage as well as rotten egg smell, it’s likely that your oxygen sensor went bad. Thanks to the cost of aftermarket parts, they won’t break the bank and due to the Web, you can choose and order the needed oxygen sensor in a few clicks.

We have gathered and tested automotive oxygen sensors which truly worth your attention. Go through our review to find out about the editor’s choice and other decent devices.

Things to Consider

Materials. Even though the oxygen sensor is not a big part, it’s one of the primary parts of a vehicle. Make sure that a device you are about to purchase was made of durable and dependable materials since you don’t want to change the oxygen sensor each year.

Best Oxygen Sensor placement

Installation. The easiness of installation matters as well if you don’t want to spend hundreds of bucks for it. The vast majority of oxygen sensor kits have detailed instructions and explain from A to Z how to replace a worn-out part for a new one. However, even if you get lost in it, you may always hire someone who’ll do that for you since oxygen sensor replacement is not a rare service at all.

Brand. Sometimes it matters — if you found an oxygen sensor that has been produced in the USA or stands for a famous brand, pays attention to it. It’s not the primary factor when selecting an oxygen sensor, however, a decent brand often means dependable materials and good functionality. Pay attention to Bosch and ACDelco oxygen sensors in our review down below.

Measurement. Even though an oxygen sensor seems to be not a big deal, we insist you need to check all details before purchase. Sometimes even one wire that does not fit your vehicle may cause additional money spending. If you want to avoid that and don’t want to waste your time — check twice all specifications on the oxygen sensor you’re getting and of the car you currently own.

Technical Issues

Vehicle economy. Many auto enthusiasts seek instant fuel economy once they have replaced oxygen sensors. You need to ride at least a hundred miles to check the difference in your auto economy as well as compare your car performance.

Mileage. If you still have doubts to replace or not to replace, here’s the thing — it’s recommended to replace oxygen sensors every 80,000 km.

Look. There are some oxygen sensors which look different, however, you should not worry. The first thing you have to do is to check connector plug, cable length and other detailed listed in kit. If there’s a whole package, there should not be any problems with installation and use.

A number of sensors. Depending on a model and production year, your vehicle may have one or two oxygen sensors. Check your auto’s engine, year and make in order to find out about it.

Assembly. There are brands (as Denso in our review) that openly claim they do not produce every single piece of oxygen sensors by themselves. If you are interested in a durable O2 device that will deliver excellent performance to your four-wheel friend for many years, pick a brand that claims its assembly and ensures the device’s quality.


To find out about oxygen sensors type, let’s go deeper to the definition. A sensor is a device that provides output in order to detect the changes in quantities. This device produces an electrical signal and corresponds to all inputs. 

Nowadays we got used to using many different types of sensors — not only for vehicles but for different electronics appliances as well. 

There are two types of oxygen sensors: narrow band and wide band.

Speaking about the first one, it rolled out to the market in the mid-1970s. In those years only two automotive brands used them: Saab and Volvo, but in 1980 those sensors came to the American market. 

Narrowband sensors are the most popular and they are known as ‘oxygen sensors’. This is because of dozens of years it has been the one and only type of sensors. They are named so because a device can detect a narrow band of air-fuel ratio. Usually, it has an on/off switch, however, it does not provide information on how lean or how rich the mix is. 

As for wideband type, they are more precise, but at the same time, they are pretty rare at the market. Before purchasing you need to check your vehicle’s make, year and model in order to make sure you’re getting an oxygen sensor that will find your vehicle. 

In this review, we’re talking mostly about narrowband oxygen sensors as we tested them out.

Comparison table

Bosch 15717 Oxygen Sensor
5 of 55 of 55 of 5
Denso 234-9005 Oxygen Sensor
5 of 54 of 5 4 of 5
ACDelco 213-4537 GM Original Equipment

5 of 54 of 5 4 of 5

Product review

We have tested out three oxygen sensors — look through our detailed review in order to pick the most suitable O2 device for your vehicle.

Bosch 15717 Oxygen Sensor

Dependable oxygen sensors by Bosch ensures excellent performance with high-quality protection tube. This device boasts of a double laser-welded stainless steel body which means it will last for many many months. All details of this device are made tightly and protect against contamination. When it comes to 3- and 4-wire sensors, heater optimizes sensor operation. The last but not the least thing — it offers coated threads for 20-mins installation.

Pros Cons
• Famous brand
• Dependable materials
• Easy installation
• Do not fit to all vehicles
Denso 234-9005 Oxygen Sensor

Highly accurate and nicely made — automotive oxygen sensor by Denso seems to be one of the most precise at the market. It was designed and produced to show the amount of exhaust gas air-fuel ratio in a few seconds. Made of durable materials, it features zirconia solid electrolyte that means it’s a dependable device. As well as the previous item, it guarantees easy setup. 

Pros Cons
• Zirconia electrolyte 
• Highly accurate
• Some parts of it are not made by Denso

ACDelco 213-4537 GM Original Equipment

If you were seeking to optimize your vehicle for fuel economy, this oxygen sensor is a real find. This is true and original General Motors part, so any doubts pass by without mentioning. High quality, reliability, and durability are guaranteed by the brand. If you own a GM vehicle, put an eye on this device.

Pros Cons
• Famous brand
• Perfectly suits for GM vehicles
• Does not fit many cars

Our best choice

To sum up all the advantages, we paid attention to Bosch 15717 Oxygen Sensor. Top brand, accuracy, dependable materials, stainless steel body — this device seems to have everything and even more needed. It perfectly optimizes sensor operation and won’t need any special tools to be installed, it will take you a maximum of 20 mins.


How does oxygen sensor work?

The oxygen sensor is one of the primary parts of your vehicle. It measures the amount of oxygen required for correct performance and regulates it accordingly.

Where is it located?

Depending on your vehicle’s year, make and model, it could be different. However, all O2 sensors are located in the exhaust stream. Check the area before the catalytic converter to find it. Depending on the type of your exhaust system, there could be one or two sensors located. 

How will I change my oxygen sensors?

It won’t take you more than half an hour to replace old sensors with new ones. Each device has a kit with detailed instructions, so you can replace the O2 sensor by yourself, not spending money on car maintenance.

What stands for ‘devices can vary refer to diagram’?

There are automobiles that have oxygen sensors with slight differences. For instance, in VIN number or manufacturing plant. That’s why it’s very important to compare the DIAGRAM DETAILS (connector plug, cable length) in order to pick and purchase the right device.


If your four-wheel friend shows there’s a problem with an oxygen sensor and it’s time to replace it, do not play with taking your time. Each car enthusiasts want fuel economy as well as the best possible performance for its vehicle — that’s why you need to keep a finger on the pulse and replace worn-out oxygen sensor as soon as possible. Make sure all wires and specifications match before you buy this device; you also need to check the type of oxygen sensors, your car’s make, year and model. Even vehicles with different production years may require different oxygen sensors, so it’s better to check twice and make sure you’re getting the right part. 

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