Genuine OEM Volkswagen Engine Auxiliary Coolant Water Pump, part number 03L965561A. This electric pump is responsible for circulating auxiliary coolant, playing a vital role in managing engine temperatures, especially during specific operating conditions or after shutdown. It is integrated into the engine cooling system to ensure efficient heat dissipation. The pump is compact, measuring approximately 0.08 meters in length. Choosing a genuine OEM pump ensures precise flow rates, correct electrical connections, and the durability needed for continuous operation within the demanding engine environment.