Genuine OEM Volkswagen Coolant Return Port, part number 3WA121132. This component plays a vital role in the engine cooling system by facilitating the efficient return of coolant, ensuring proper circulation and temperature regulation. It is integrated into the coolant management assembly. Weighing 0.0227 kg, this genuine OEM port ensures precise fitment, leak-free connections, and material compatibility with coolant, critical for maintaining optimal engine operating temperatures and preventing overheating.