Genuine OEM Audi Air Filter, part number 4E0129620E. This crucial filter element is designed to clean incoming air before it enters the engine, preventing dust, pollen, and other contaminants from causing damage to internal components. It is installed within the vehicle's air filter housing as part of the intake system. With dimensions of approximately 0.185m length, 0.152m width, and 0.152m height, it provides ample filtration surface area. Choosing a genuine OEM air filter ensures the correct filtration efficiency, airflow characteristics, and precise fitment for optimal engine protection and performance.