Genuine OEM Audi Left Intercooler, part number 4M0145803R. This vital component functions as a charge air cooler, designed to significantly reduce the temperature of compressed air from the turbocharger or supercharger before it enters the engine. It is specifically positioned on the left side of the vehicle's intake system. By cooling the intake air, it increases air density, leading to improved combustion efficiency and power output. This intercooler weighs 3.717 kg and measures 0.51m x 0.325m x 0.185m. Using a genuine OEM intercooler ensures precise fitment, optimal heat exchange efficiency, and durable construction to withstand high pressures and temperatures.