Genuine OEM Volkswagen Charge Air Cooler, part number 04E145785L. This component cools the compressed air from the turbocharger before it enters the engine, increasing its density and improving combustion efficiency. It is located as part 11 in the diagram. The charge air cooler has dimensions of 0.405m length, 0.23m width, and 0.155m height, weighing 2.277 kg. Genuine OEM charge air coolers are manufactured to precise specifications to ensure optimal heat exchange and durability.