Genuine Audi Headlight Assembly Xenon Left (A6) - 4F0941029ER: Genuine Audi Headlight Assembly Xenon Left (A6) - 4F0941029ER is a direct replacement part for your Audi A6. This part is made from high-quality materials to ensure a long-lasting part that will keep your headlights looking like new. This assembly includes the xenon bulb and the left headlight housing.