What does a radiator fan shroud do in a car?

A radiator fan shroud is an essential component of a car's cooling system. Its primary function is to direct the airflow produced by the radiator fan across the entire surface of the radiator. The shroud is designed to enclose the fan blades, ensuring that all air gets pulled through the radiator instead of escaping in other directions. By creating a focused airflow, the fan shroud helps in extracting heat from the radiator more effectively, keeping the engine cool.