FREE SHIPPING
On Orders Over $99
Customer Service

Select Your Vehicle

Take An Additional 15% Off Brakes and Rotors* Using Code: BRAKESAVE15

Questions?

Our USA based
parts pros can help.

Click Here

Industry Leading Warranty

Click to learn more

Community

Air Fuel Ratio Senso

Air Fuel Ratio Sensor

arrow To find your Air Fuel Ratio Sensor choose your Year, Make and Model first.
Air Fuel Ratio Sensor

Air Fuel Ratio Sensor

The air fuel ratio sensor started appearing on cars with the development of fuel injection systems. The air fuel sensor's job is to monitor the air fuel mixture level. The main advantage of using the air fuel ratio sensor is that the engine control module (ECM) can more accurately meter the fuel, which reduces emissions. The sensor generates a voltage signal based on the amount of oxygen in the exhaust.

Based on driving conditions the air fuel ratio sensor sends information to the engine management computer to make adjustments. These adjustments allow the motor to burn fuel more efficiently and produce fewer emissions. The air fuel ratio sensor increases the performance of your vehicle and reduces fuel consumption. It also helps in maximizing the catalytic converter's life.

At Buy Auto Parts you can locate a wide range of car parts at affordable prices. We have genuine OEM replacements and aftermarket parts that are tested thoroughly and come with an industry leading warranty. We provide free shipping on all orders above US $99. Call our toll free support line at 1-888-907-7225 or email us at [email protected] for further information.