Genuine OEM Audi Engine Water Coolant Hose, part number 1K0121101CD. This hose is a vital component of the engine cooling system, responsible for carrying coolant to regulate engine temperature and prevent overheating. Weighing 0.121 kg and measuring approximately 0.282 m in length, this hose is constructed from durable, heat-resistant rubber. Choosing a genuine OEM hose ensures the correct routing geometry, material composition, and resistance to high temperatures and pressures for reliable, leak-free performance and optimal engine cooling.