Wellvie GRB Impreza WRX STI O2 Compatible with Genuine Part Improves Fuel Exhaust System Idling Sensor/Lambda Sensor, Number 22690AA850, Efficiency,

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An O2 sensor is a sensor that detects the concentration of O2 (oxygen). It is said that the most common cause of the engine check light coming on is an abnormality in the O2 sensor. If the O2 sensor malfunctions, it may cause the following problems: - Deterioration of fuel economy - Exhaust gas smells bad - Engine warning light comes on The lifespan of an O2 sensor is generally said to be more than 5 years or more after 80,000 km of driving. However, O2 sensors deteriorate over time, so if you notice a strong exhaust gas smell or poor fuel economy, it is important to have the sensor inspected and replaced as soon as possible. ■O2 sensor (oxygen sensor) ■Compatible genuine part number 22690AA850 ■Reference compatible vehicle GRB Impreza WRX STI *Even if the grade or model is listed for the vehicle model above, it may not be compatible depending on the year, specifications, etc. Please be sure to check the OEM part number installed on the actual vehicle before ordering. An O2 sensor detects the concentration of O2 (oxygen). The most common cause of an engine check light is an O2 sensor malfunction. A malfunctioning O2 sensor can cause the following problems: Decreased fuel economy, Exhaust gas odor, and Engine Warning Light illumination. The O2 sensor's lifespan is generally 5 years or more, or after 80,000 km or more of driving. However, O2 sensors deteriorate over time. Therefore, if you notice a stronger exhaust gas odor or worsening fuel economy, it's important to have the sensor inspected and replaced as soon as possible. ■ O2 Sensor (Oxygen Sensor) ■ Compatible OEM Part Number: 22690AA850 ■ Reference Compatible Vehicles: GRB Impreza WRX STI *Even if the grade and model are listed above, compatibility may not be guaranteed depending on the year and specifications. Please be sure to check the OEM part number installed on your vehicle before ordering.