Genuine OEM Volkswagen LED Tail Light Grommet, part number 571945179. This grommet is designed to create a watertight and dust-proof seal between the LED tail light assembly and the vehicle body. Its function is to prevent the ingress of moisture, dirt, and other debris, which can cause corrosion and electrical issues. Made from high-quality rubber for long-lasting flexibility and sealing performance. Genuine OEM grommets ensure a perfect fit and reliable seal, protecting the delicate electronics within the tail light.