The auxiliary electric water pump (coolant circulation pump) with part number 1K0 965 561 F is widely used in the following Volkswagen Group models, mainly equipped with 1.4 TSI, 2.0 TSI/TFSI, and 3.6L V6 engines.

Although the car water pump has a simple structure, it is the power source for the engine cooling system and is crucial to the engine’s health. Understanding its function, working principle, and common faults helps car owners to identify potential problems in a timely manner and perform proper maintenance, thus avoiding major issues and protecting the expensive engine.