International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Save on GM Genuine Parts Oxygen Sensor: 4 Wires, 258 mm Long, Heated, Exact Fit 213-3206 at Advance Auto Parts. Buy online, pick up in-store in 30 minutes This sensor measures the proportion of oxygen in the exhaust gases. ACDelco Oxygen Sensor - 213-3206 - O'Reilly Auto Parts Heated Oxygen Sensor Replacement Aazon.co: General Otors 213-3206 Heated Oxygen Sensor GM Original Equipment Sensor Manufactured to GM OE specification for fit, form, and function ACDelco® 213-3206 - Genuine GM Parts™ Oxygen Sensor 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. 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.