Genuine OEM Volkswagen Retainer For Pump, part number 04E131085C. This component acts as a bracket or mount to securely hold a pump in its designated position within the engine bay. It is specifically designed to interface with both the pump and the mounting surface. The retainer is marked as number 2 in the diagram. Genuine OEM retainers are crucial for ensuring the pump is correctly aligned and vibration-free, which is essential for its efficient operation and longevity.