Genuine OEM Volkswagen Engine Coolant Pipe, part number 4M0121525D. This rigid pipe is a critical component of the engine cooling system, responsible for transporting coolant between the engine and the radiator to dissipate heat and maintain optimal operating temperatures. It is positioned connecting to the radiator. Weighing 0.564 kg, this pipe is designed for specific pressure and temperature resistance. Choosing a genuine OEM coolant pipe ensures correct routing geometry, material integrity, and leak-free performance for reliable engine cooling.