Genuine OEM Audi Headlight Drain Hose, part number 4G0941718A. This small, flexible hose is specifically designed for the right-side headlight assembly. Its function is to effectively drain any accumulated water or condensation from within the headlight housing, preventing moisture buildup that can lead to fogging, corrosion, or electrical issues. Weighing only 0.014 kg, it ensures proper ventilation. Choosing a genuine OEM drain hose guarantees the correct material, length, and routing to maintain the integrity and longevity of the headlight unit.