Genuine OEM Audi Coolant Hose, part number 8W0121030K. This flexible hose is an integral part of the engine cooling system, responsible for transporting coolant between various engine components to maintain optimal operating temperatures. Weighing approximately 0.3 kg, this genuine OEM coolant hose is constructed from durable materials to withstand high temperatures and pressures, ensuring a leak-free connection and reliable cooling performance.