Genuine OEM Audi Coolant Pipe, part number 057121491H. This component is part of the engine's cooling system, facilitating the circulation of coolant between various components. It is located within the engine bay, connecting to other parts of the cooling circuit. Constructed from durable, heat-resistant material. Genuine OEM coolant pipes are designed to withstand high temperatures and pressures, ensuring leak-free operation and maintaining optimal engine temperature.