Genuine OEM Volkswagen Charge Air Intercooler, part number 3AA145805B. This essential component cools the compressed air from the turbocharger, reducing its temperature and increasing its density before it enters the engine for improved performance and efficiency. Weighing approximately 2.75 kg, this intercooler is designed for optimal thermal exchange. Choosing a genuine OEM intercooler ensures the correct cooling capacity, precise fitment, and durable construction for reliable engine operation.