The Genuine BMW Cover Exhaust Air Duct Left - 51717302365 is a high-quality replacement part for the exhaust system of BMW vehicles. It is designed to cover and protect the exhaust air duct on the left side of the vehicle. This cover is made from durable materials to ensure long-lasting performance and is an exact fit for the specified BMW model. It is an authentic OEM product, ensuring reliable and precise fitment. This cover is an essential component of the exhaust system, helping to maintain proper airflow and prevent any damage to the duct.