12634061 O2 Sensor GM Genuine Heated Oxygen Sensor (Programming Required By Automotive Professional) | 12634085 | GM Gm Genuine Parts 12634061 Heated Oxygen Sensor Fuse Detect oxygen content in the exhaust gases to optimize emissions and fuel economy 2016-2020 GM Heated Oxygen Sensor 12666612 | GM Parts Center Offering the quality, reliability, and durability of GM OE GM Genuine Parts Oxygen (O2) Sensors are designed, engineered and tested to rigorous standards and are backed by General Motors. These sensors are special... 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. Heated Oxygen Sensor - GM (12634061) - OEM Parts For You 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.