Genuine OEM Audi Engine Air Filter, part number 059133843B. This filter is a critical component of the engine's intake system, designed to trap dust, pollen, and other airborne contaminants before they can enter the engine. Clean air is essential for efficient combustion, protecting internal engine components from wear and maintaining optimal performance. Weighing 0.442 kg, genuine OEM filters provide superior filtration efficiency and airflow characteristics, crucial for engine health and fuel economy.