Genuine OEM Audi Additional Coolant Pump, part number 3QF121599C. This pump circulates coolant through auxiliary cooling circuits, ensuring precise temperature management for various engine components. It is typically located within the engine cooling system, connected by hoses. Weighing 0.522 kg, this pump is built to exact factory specifications. Choosing a genuine OEM coolant pump ensures reliable performance, proper flow rates, and long-term durability, preventing overheating and maintaining system integrity.