Genuine OEM Audi Charge Air Cooler Hose, part number 3C0145832D. This left-side hose is designed to carry pressurized air to or from the charge air cooler, playing a vital role in the engine's intake system. Weighing 0.392 kg, its robust construction and precise routing geometry ensure optimal airflow and resistance to pressure and temperature fluctuations, crucial for maintaining engine efficiency and preventing boost leaks.