ACDelco GM Original Equipment Oxygen Sensor

The ACDelco GM Original Equipment Oxygen Sensor (also called an O2 sensor, air/fuel ratio sensor or lambda sensor) monitors the oxygen content in the exhaust stream and sends that data to the engine control module. The ECM uses this signal to fine-tune fuel delivery, which helps the engine run efficiently, keep emissions in check and perform as designed.

Key Features:

• Genuine GM Original Equipment design from ACDelco, GM's official parts brand
• Delivers accurate exhaust oxygen readings for precise air/fuel ratio control
• Helps maintain fuel economy, drivability and emissions system performance
• Built to meet GM engineering specifications for fit, function and durability
• Available in upstream and downstream sensor configurations, each with its own part number

A worn or contaminated oxygen sensor can cause a check engine light, rough running, poor fuel economy and failed emissions tests. Replacing it with an ACDelco GM Original Equipment sensor helps restore proper engine management and keeps the exhaust system working correctly.