Genuine OEM Volkswagen Secondary Air Pump Hose, part number 1J0131128. This hose is a vital component of the secondary air injection system, responsible for transporting air to aid in emissions reduction during cold starts. It ensures the correct flow of air to the system, contributing to efficient catalytic converter operation. Made from durable, heat-resistant material, it weighs 0.106 kg with dimensions of 0.28m x 0.11m x 0.063m. Using genuine OEM hoses guarantees precise routing, proper sealing, and resistance to engine bay conditions, ensuring the integrity of the emissions system.