An ACDelco Professional, premium aftermarket Oxygen (O2) Sensor is the ideal high quality replacement for your GM vehicle. It is a special feedback sensor on your vehicle's exhaust system. This sensor measures the proportion of oxygen in the exhaust gases. Using this measurement, the engine management computer can adjust the air/fuel ratio near the optimum value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. This premium aftermarket replacement oxygen sensor is manufactured to meet or exceed your expectations for fit, form, and function. When your vehicle needs to run in tip-top form - to pass a state emissions test or to simply be environmentally conscious - you need ACDelco in your corner. Our Professional, premium aftermarket lineup of oxygen sensors, mass airflow sensors, and control modules will help your vehicle run as efficiently and cleanly as possible.

Product Features:

• Detect oxygen content in the exhaust gases to optimize emissions and fuel economy
• Coverage available for GM and non-GM applications
• Professional, premium aftermarket replacement
• Provides the performance and dependability you expect from ACDelco
• Manufactured to meet expectations for fit, form, and function