16100-39395 refers to the engine water pump assembly for Toyota and Lexus brands.Toyota Auris (including hybrid version) Toyota Corolla (including South African version, hatchback, sedan/wagon version) Toyota Yaris Toyota Platz Lexus CT200h

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.