Genuine OEM Audi Secondary Air Pump, part number 078906601M. This component plays a crucial role in the vehicle's emissions control system by injecting fresh air into the exhaust stream, particularly during cold engine starts. This process helps to rapidly heat the catalytic converter, improving its efficiency in reducing harmful pollutants. Weighing 1.564 kg, this pump features a durable plastic housing. Using a genuine OEM secondary air pump ensures correct air pressure delivery, reliable electrical operation, and proper integration with the vehicle's emissions management system for optimal environmental performance.