The water pump is an important part that circulates the coolant that cools the engine. The coolant, which has become hot due to the heat of the engine, is cooled by the radiator and returned to the engine. The water pump is located between the radiator and the engine, and is driven by a timing belt or fan belt via a pulley to forcibly circulate the coolant. Compensation may not be possible if the replacement work is done individually. * Even if the model is the same, the type will differ depending on the model and year, so be sure to check the "genuine part number".