Mopar Performance Upstream Oxygen Sensor

The Mopar Performance Upstream Oxygen Sensor (also called an O2 sensor or air-fuel ratio sensor) is a replacement engine management part. It is sold under the Mopar Performance name, the performance parts brand of Mopar, the Stellantis parts organization. The upstream sensor mounts ahead of the catalytic converter. It measures the oxygen content of the exhaust leaving the engine.

Key Features:

• Upstream position, ahead of the catalytic converter, for primary exhaust oxygen monitoring
• Sends exhaust oxygen readings to the engine control module, which uses them to adjust fuel delivery
• Helps maintain proper air-fuel ratio, fuel economy, drivability and emissions performance
• Supplied with a pre-attached wiring harness and connector
• Mopar-branded part, offered in multiple part numbers and configurations

A worn or failing oxygen sensor can cause a check engine light, rough idle, poor fuel economy or increased emissions. Replacing it restores accurate feedback to the engine computer. Select the part number that matches your application, including sensor position and connector style.