Radiators are heat exchangers used within a vehicle’s cooling system to dissipate thermal energy from engine coolant. Typically constructed from aluminum or copper alloys with brazed seams, they feature a core of tubes and fins to maximize surface area. Coolant flows through the core, transferring heat to airflow generated by fans and vehicle motion. Radiators are positioned behind the front grille to receive direct airflow and maintain optimal engine operating temperatures. Core design and tank construction vary by application to accommodate differing heat loads and vehicle packaging.