Genuine OEM Audi Headlight Dust Cover Cap, part number 8P0941159A. This cap is designed to protect the sensitive internal components of the headlight assembly from ingress of dust, moisture, and debris. It securely seals the rear opening of the headlight unit. This round cap, approximately 0.06m in diameter, is made from durable, heat-resistant plastic. Choosing a genuine OEM dust cover cap ensures a precise fit and effective seal, critical for maintaining headlight performance and longevity, and preventing premature bulb or component failure.