Genuine OEM Audi Cabin Air Filter, part number 8KD819441A. This pleated filter element is crucial for cleaning the air that enters the vehicle's cabin, removing dust, pollen, and other airborne particles. It is typically located within the HVAC system, often behind the glove compartment or under the dashboard. Measuring 0.3m in length and 0.155m in width, this filter ensures a healthy interior environment. Choosing a genuine OEM filter guarantees the correct filtration efficiency, airflow, and precise fit for maintaining optimal cabin air quality.