Toyota Corolla 2009 -2020 Radiator Bottle Geniune

High-quality, durable plastic that can withstand the heat and pressure of the engine’s cooling system. The plastic material is transparent or semi-transparent to allow easy monitoring of the coolant level.The radiator reservoir bottle also acts as an overflow tank. If the cooling system is overfilled or the engine becomes too hot, the excess coolant will be expelled into the reservoir bottle. Once the engine cools down, the coolant from the reservoir can be drawn back into the radiator, preventing any loss of coolant