ACDelco Professional Oxygen Sensor

The ACDelco Professional 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 module uses the signal to fine-tune the air-fuel mixture. This helps the engine run efficiently, keeps emissions low and supports good fuel economy.

Key Features:

• Engineered to meet or exceed original equipment performance and fit requirements
• Accurate exhaust gas measurement helps the engine control module keep the air-fuel ratio on target
• Helps maintain proper catalytic converter operation and emissions compliance
• Durable construction is designed to withstand high exhaust temperatures, vibration and road contaminants
• Available in upstream and downstream configurations with application-specific connectors and wire lengths
• Backed by ACDelco, the original equipment parts brand of General Motors

A failing oxygen sensor can cause a check engine light, rough idle, poor fuel economy and higher emissions. Replacing it with an ACDelco Professional sensor helps restore proper engine management and dependable performance.