The fan in the cooling system of a motorbike supports the cooling of the engine, especially at low speeds or when stationary. It ensures that the temperature of the coolant remains in the optimum range by drawing air through the radiator. A functioning fan prevents overheating and extends the service life of the engine. It is important to check the fan regularly to ensure that it is working properly and to rectify any damage immediately. High-quality fans, suitable for the specific motorbike model, ensure effective cooling performance and reliability.