The Pierburg Throttle Body Kit - 474139 is a comprehensive set of products designed for a car's throttle body system. It includes various components that work together to regulate the amount of air entering the engine, ensuring optimal performance and fuel efficiency. The kit contains a throttle body, which is responsible for controlling the air flow, as well as a gasket, sensor, and other necessary hardware for installation. Additionally, it includes a cleaning solution to maintain the cleanliness of the throttle body and a lubricant to ensure smooth operation. This kit is essential for maintaining the proper functioning of a car's engine and can help improve overall performance.