Genuine OEM Volkswagen Engine Coolant Radiator, part number 5U0121253C. This essential component of the cooling system is responsible for dissipating excess heat from the engine coolant, preventing overheating. It is typically mounted at the front of the vehicle, behind the grille. Weighing approximately 2.47 kg, this radiator features a robust core design for efficient heat exchange. Using a genuine OEM radiator ensures correct cooling capacity, proper hose connections, and long-term reliability for critical engine temperature management.