Genuine OEM BMW Crankcase Vent Valve, part number 11158661697. This component is essential for regulating pressure and removing harmful gases from the crankcase, playing a vital role in the vehicle's emissions control system. It ensures that blow-by gases are properly managed, preventing pressure buildup and contributing to cleaner operation. Manufactured with precision, genuine OEM valves guarantee correct flow rates and reliable operation. This ensures the longevity of engine components and compliance with emission standards.