The Genuine BMW Set Air Duct - 51742157686 is a set of air ducts designed specifically for BMW vehicles. These air ducts are made from high-quality materials and are designed to improve the airflow in the vehicle's engine compartment. They are designed to fit seamlessly into the vehicle's existing air intake system, providing a more efficient and powerful engine performance. These air ducts are genuine BMW parts and are guaranteed to meet the highest standards of quality and performance. They are an essential component for maintaining the optimal performance of a BMW vehicle.