The Genuine BMW PCV Breather System Kit - 471319 is a kit of products designed for use in a car's PCV (positive crankcase ventilation) system. The kit includes various components such as hoses, valves, and gaskets, all of which are essential for maintaining proper airflow and pressure within the engine. The specific contents of the kit may vary, but typically include a PCV valve, a breather hose, an oil separator, and other related parts. These components work together to regulate the flow of air and oil vapors through the engine, ensuring efficient operation and reducing the risk of engine damage. This kit is designed specifically for use in BMW vehicles, but may also be compatible with other makes and models.