The Genuine BMW PCV Breather System Kit - 471316 is a comprehensive set of products designed to service the Positive Crankcase Ventilation (PCV) system in a car. The kit includes various components such as hoses, valves, and gaskets, which are essential for maintaining the proper functioning of the PCV system. The PCV system is responsible for regulating the flow of harmful gases from the engine crankcase back into the combustion chamber, thereby reducing emissions and improving engine performance. This kit is specifically designed for BMW vehicles, but it can be used for any car with a similar PCV system. The contents of the kit are carefully selected to ensure compatibility and effectiveness.