The description refers to a transmission torque converter for a 2012-2014 Mercedes-Benz W204 C250 or SLK250. This part is an OEM (Original Equipment Manufacturer) component, meaning it is designed and produced by Mercedes-Benz to meet the original specifications and quality standards for these vehicles. The torque converter, with the part number 2212503902, is a critical component in the vehicle's automatic transmission system. It allows the engine to continue running while the vehicle is stationary and provides a smooth transfer of power from the engine to the transmission, ensuring optimal driving performance and efficiency.