Bosch Oxygen Sensor Center Sensor

The Bosch Oxygen Sensor (also called an O2 sensor or lambda sensor) monitors the oxygen content in the exhaust stream and sends that data to the engine control unit. The ECU uses it to fine-tune the air-fuel mixture. This center sensor line is for the oxygen sensor position in the middle of the exhaust system.

Key Features:

• Measures exhaust oxygen levels so the engine can maintain the correct air-fuel ratio
• Helps support fuel efficiency, smooth engine performance, and lower emissions
• Designed to meet OE-level fit, form, and function
• Built by Bosch, a long-established OE supplier and the company that introduced the automotive oxygen sensor
• Quality-tested construction for durable performance in high-temperature exhaust conditions

A worn or failing oxygen sensor can cause a check engine light, poor fuel economy, rough idle, and increased emissions. Replacing it helps restore proper engine management and efficient operation. Select the correct child item for your application using the individual part numbers listed on this page.