Genuine OEM Volkswagen Secondary Air Pump Hose, part number 5C0131128F. This hose is an integral part of the secondary air injection system, connecting the air pump to other components to facilitate the introduction of fresh air into the exhaust. Made from durable, flexible, and heat-resistant materials, it features a foam insulation section and weighs approximately 0.193 kg. Installing a genuine OEM hose guarantees precise fitment, secure connections, and resistance to the harsh conditions of the engine bay, which is essential for maintaining the efficiency and longevity of the emissions system.