Heated Oxygen Sensor

The GM Genuine Parts 55574136 oxygen sensor is engineered and tested to rigorous General Motors standards, serving as a critical feedback component in your vehicle's exhaust system. It precisely measures the oxygen content in exhaust gases, enabling the Engine Control Module (ECM) to maintain an optimal air/fuel ratio of 14.7:1. This precise ratio is key to maximizing engine performance, minimizing emissions, and enhancing fuel economy. As a true OE part, it has been validated by GM for their vehicles and may have previously been known as ACDelco GM Original Equipment. This specific oxygen sensor features a female, flat connector and a 18mm thread diameter with a 275mm length. Its heated sensor type ensures faster response times, contributing to more efficient operation. The wiring harness measures 190mm in length. Installation of this part requires programming and/or special setup procedures. GM Service Information provides the necessary details on procedures and specialized tools needed to ensure its proper operation within the vehicle. The ACDelco GM Original Equipment 55574136 is compatible with 2012-2020 Chevrolet Sonic models, specifically as a Downstream sensor for 2012-2013 models and Downstream Left for 2014-2020 models.