Genuine OEM Audi Headlight Housing Vent Cap, part number 4N0941041. This cap is designed to cover the headlight housing vent, protecting the internal components of the headlight assembly from moisture, dust, and debris while allowing for proper air circulation. It is located on the rear of the headlight housing. Weighing 0.002 kg, this genuine OEM cap ensures a precise seal and fit, crucial for maintaining the longevity and performance of the headlight unit and preventing condensation.