Genuine OEM Audi Intercooler Radiator, part number 4H0145805M. This heat exchanger, also known as a charge air cooler, is designed to cool the hot, compressed air exiting the turbocharger before it enters the engine's intake manifold. By reducing the air temperature, it increases air density, leading to improved combustion efficiency and engine power. Weighing 4.299 kg, it features a robust finned core. Using a genuine OEM intercooler ensures optimal cooling efficiency, proper pressure drop characteristics, and durable construction to withstand high boost pressures.