Genuine OEM Audi Secondary Air Pump, part number 07L959253L. This critical component is designed to inject fresh air into the exhaust system during cold starts, facilitating the catalytic converter's operation and significantly reducing harmful emissions. The pump is a robust black plastic unit, weighing approximately 1.6 kg. Installing a genuine OEM secondary air pump ensures precise air delivery, correct electrical integration, and long-term reliability for effective emissions control and engine performance.