Genuine OEM Audi Engine Coolant Hose, part number 4M0819672A. This hose is a critical component of the engine cooling system, responsible for transporting coolant to maintain optimal engine operating temperatures. Its specific routing and connections are designed for precise fitment within the cooling circuit. Made from high-quality, heat-resistant rubber compounds, it ensures durability and leak-free performance. Using a genuine OEM coolant hose guarantees correct fluid flow, resistance to extreme temperatures and pressures, and prevents premature failure that could lead to engine overheating.