General Motors GM Genuine Parts 213-3237 Heated Oxygen Sensor

An ACDelco GM Original Equipment Oxygen (O2) Sensor is a GM-recommended replacement for your vehicle’s original component, and 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 original equipment oxygen sensor has been manufactured to fit your 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
Manufactured to GM OE specification for fit, form, and function