Genuine OEM Audi Air Charge Radiator, part number 4F0145806AF. This component is responsible for cooling the air charge from the turbocharger before it enters the engine. It is located in the intake system. The radiator has dimensions of 0.365m length, 0.275m width, and 0.155m height, weighing 1.825 kg. Genuine OEM construction ensures exact fitment and thermal efficiency, critical for maintaining engine power and preventing detonation.