Active grille shutters open and close automatically to balance airflow, aerodynamics, and fuel economy — closing at highway speed to reduce drag, and opening under load or high engine temps to let more air reach the radiator. A stuck or malfunctioning shutter assembly can trigger a check engine light, cause overheating under load, or hurt highway fuel economy if it won't close. Browse replacement active grille shutter assemblies for cars, trucks, and SUVs to restore proper airflow control.
