Genuine OEM Audi wiring harness retainer, part number 4B0971849. This component is designed to securely route and anchor electrical wiring harnesses, preventing movement and potential damage from vibration. It is used within the interior electrical assembly as shown in the diagram. Genuine OEM retainers are manufactured to the correct material specifications to ensure they maintain their grip and elasticity over the life of the vehicle, preventing annoying rattles and electrical shorts.