Genuine OEM Volkswagen Auxiliary Cooling Water Pump, part number 5Q0121599AA. This electric pump is responsible for circulating coolant through auxiliary systems, such as turbochargers or intercoolers, to maintain optimal operating temperatures. It features a compact design with integrated heat shielding for durability. Using a genuine OEM auxiliary pump ensures correct flow rates and electrical compatibility, preventing localized overheating and extending component life.

Catalogue entry: PUMP.