The Genuine BMW Crankcase Oil Separator Set - 11158636540 is a high-quality replacement part for BMW vehicles. This set includes all necessary components for proper installation, including the oil separator, hoses, and clamps. The oil separator is an essential component in the engine's crankcase ventilation system, helping to separate oil from the air before it is recycled back into the engine. This ensures that the engine runs smoothly and efficiently, reducing the risk of damage and prolonging its lifespan. This product is made with the highest quality materials and is designed to meet or exceed the original equipment specifications. It is compatible with a wide range of BMW models and is a genuine OEM product, ensuring a perfect fit and reliable performance.