16100-80010 16100-80004 16100-09630 16100-80019The original part number for Toyota engine water pumps used in 1NR-FE engines such as Yaris, Vitz, Corolla, and Auris.

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.