Genuine OEM Audi Engine Coolant Hose, part number 07K121061B. This hose is an integral part of the engine cooling system, responsible for transferring coolant to maintain optimal engine operating temperatures. It is a precisely molded component, weighing approximately 0.07 kg. Using a genuine OEM hose ensures correct routing, proper fitment, and resistance to extreme temperatures and pressures, preventing leaks and maintaining the efficiency of the cooling system.