Genuine OEM Audi Upper Air Cleaner Cover, part number 420133846D. This component serves as the top enclosure for the air cleaner element, protecting it from debris and ensuring a sealed intake path for the engine. It forms the upper section of the air filter housing. Weighing approximately 1.65 kg, it is made from durable plastic, possibly with a textured finish. Using a genuine OEM air cleaner cover guarantees precise fitment and sealing, which is essential for effective air filtration and preventing unfiltered air from entering the engine.