Genuine OEM Audi Coolant Pipe, part number 8R0121071H. This rigid pipe is an integral part of the engine cooling system, responsible for directing coolant flow between the radiator and other engine components. Positioned on the lower right side of the radiator assembly, it ensures proper circulation for optimal engine temperature regulation. Genuine OEM coolant pipes are engineered with specific bends and connection points for a perfect fit and are made from durable materials to withstand high temperatures and pressures without corrosion or leaks.