Genuine OEM Toyota Radiator Hose No.1, part number 165710T470. This hose is a critical component in the engine cooling system, directing coolant flow between the engine and radiator. It is typically located on the upper or lower section of the cooling system assembly. Manufactured to precise specifications for optimal performance and durability. Genuine OEM parts ensure exact fit and material integrity for reliable operation, maintaining the correct coolant pressure and temperature.