Genuine OEM Audi Coolant Pipe, part number 4KL121081C. This pipe is an integral part of the engine cooling system, responsible for efficiently transporting coolant between various components to maintain optimal operating temperatures. It is typically located within the engine bay, forming a crucial link in the coolant circulation pathway. Constructed from durable, heat-resistant materials, this pipe measures approximately 0.56 meters in length and weighs 0.05 kg. Using a genuine OEM coolant pipe ensures precise fitment, correct routing geometry, and resistance to thermal cycling and corrosion, preventing leaks and maintaining system integrity.