Genuine OEM Audi Secondary Air Pump, part number 06A959253E. This electric pump plays a crucial role in the vehicle's emissions control system by injecting fresh air into the exhaust stream, particularly during cold starts. This process helps to rapidly heat the catalytic converter and reduce the output of harmful pollutants. It is typically located in the engine bay, connected to the exhaust system. Weighing 1.454 kg, this component is designed for precise operation. Selecting a genuine OEM secondary air pump ensures correct air flow rates, proper electrical integration, and long-term reliability, which are vital for maintaining emissions compliance and engine performance.