Genuine OEM Audi Coolant Hose, part number 420121082A. This flexible hose is specifically designed to connect the coolant pump to other vital components of the engine cooling system, facilitating the flow of coolant to maintain optimal engine temperature. It plays a crucial role in the circulation path, often located near the water pump assembly. Weighing approximately 0.43 kg and measuring 0.437 m in length, this hose is made from high-quality, heat-resistant rubber. Opting for a genuine OEM coolant hose guarantees precise fitment, correct pressure resistance, and long-term durability against engine heat and coolant additives, preventing leaks and ensuring system integrity.