Genuine OEM Volkswagen Secondary Air Pump Air Line, part number 07K131145J. This rigid air line is a component of the secondary air pump system, responsible for carrying air to facilitate emissions reduction. It is typically positioned on the right side of the engine bay, connecting specific components of the secondary air system. Constructed from durable metal, it is designed to withstand high temperatures and pressures within the engine environment. Using a genuine OEM air line ensures precise fitment, correct material composition, and robust connections, which are essential for the reliable operation of the emissions control system.