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An ACDelco GM Original Equipment Oxygen (O2) Sensor is a GM-recommended replacement for your vehicleâ€™s original component, and is a special feedback sensor on your vehicleâ€™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 original equipment oxygen sensor has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Detect oxygen content in the exhaust gases to optimize emissions and fuel economy
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
Detect oxygen content in the exhaust gases to optimize emissions and fuel economy
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle

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ACDelco 213-4551 Oxygen Sensor;