Genuine OEM Audi Secondary Air Pump, part number 07L959253B. This pump is a critical component of the vehicle's emissions control system, designed to inject air into the exhaust stream to facilitate the oxidation of pollutants. It is located in the engine compartment. The pump weighs 1.455 kg. Genuine OEM secondary air pumps are manufactured to precise specifications, ensuring the correct air flow and pressure required for effective emissions reduction and optimal engine performance.