On the front of an MX5 NB (1998–2000), the air deflector plays an important role in directing airflow around the radiator. Instead of allowing air to flow uncontrolledly past the cooling system, this design helps direct the airflow more effectively through the radiator, allowing heat to be dissipated more efficiently. You’ll especially notice how important a properly functioning cooling system is during slow-moving traffic or on hot summer days. The parafan acts as a link between the fan, the radiator, and the components that together regulate the engine’s thermal management, ensuring that cooling capacity is utilized optimally. On older cars, you sometimes see cracks or warping develop, which reduces the efficiency of airflow.
