Genuine OEM Volkswagen Secondary Air Injection Pipe, part number 06A131372. This component is part of the secondary air injection system, which introduces fresh air into the exhaust stream to aid in catalytic converter warm-up and reduce emissions during cold starts. The pipe ensures efficient transport of air from the pump to the exhaust system. Made from durable, heat-resistant plastic, it is designed to withstand the engine environment. Choosing a genuine OEM pipe guarantees an accurate fit, correct routing, and the necessary durability for effective emissions control.