Genuine OEM Audi Fuel Filter Retainer, part number 4K0201710E. This essential component is designed to securely hold the fuel filter in its designated housing, preventing movement and ensuring proper fuel delivery. It is located within the fuel system assembly, supporting the fuel filter. Weighing 0.0548 kg with dimensions of 0.155m x 0.105m x 0.011m, it provides stable support. Opting for a genuine OEM retainer guarantees precise fitment and the necessary strength to withstand vibrations and environmental factors, maintaining the reliability of the fuel filtration system.