Part number 16100-39506 is an original Lexus and Toyota engine water pump assembly, primarily for specific models equipped with V8 engines, including the Lexus GS, ISF, LC, LS, and RC F series.

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.