Genuine OEM Audi Charge Air Cooler Hose, part number 3C0145838D. This hose is essential for transferring pressurized air from the turbocharger to the engine's intake system, maintaining engine performance. It is typically made from reinforced rubber or silicone to withstand high temperatures and pressures within the intake system. Weighing approximately 0.22 kg, this hose features precise routing geometry. Choosing genuine OEM ensures the correct material composition, flexibility, and connection integrity to prevent boost leaks and maintain engine efficiency.