Genuine OEM Audi Engine Solenoid Valve Retainer, part number 4K0121305AL. This retainer is designed to securely hold the engine solenoid valve in its correct position within the engine cooling system. Proper retention ensures the solenoid valve functions reliably, contributing to efficient thermal management. Weighing 0.0768 kg, this genuine OEM part provides the precise fit and durability necessary to withstand engine vibrations and temperature fluctuations.