Genuine OEM Volkswagen Secondary Air Pump Hose, part number 7P0131625A. This hose is responsible for transferring air from the secondary air pump to the exhaust system, aiding in emissions control during cold starts. It is typically located within the engine bay, connecting the air pump to the air injection system. Constructed from durable, flexible plastic or rubber, it is designed to withstand engine heat and vibrations. Choosing a genuine OEM hose ensures correct routing, secure connections, and resistance to exhaust gases, preventing leaks and maintaining emissions compliance.