Genuine OEM Audi Coolant Pipe, part number 03C121070L. This pipe is a critical component of the engine cooling system, responsible for circulating coolant to maintain optimal engine operating temperatures. It is routed within the engine bay to connect various cooling components. Constructed from durable, heat-resistant plastic or metal, weighing approximately 0.415 kg. Using a genuine OEM coolant pipe ensures precise routing, proper sealing, and resistance to high temperatures and pressures, which are vital for preventing leaks and maintaining the efficiency and longevity of the engine cooling system.