Is your Carbonio air filter old, dirty, clogged, or damaged? That will directly effect performance and rob horsepower! Get your intake performing like new again! The same filter type that comes with a brand new kit from Carbonio. Fits the Carbonio 2.0T TSI transverse intake systems (CI100020, CI100033), The 2.5L systems (CI100018, CI100025), and also the MK4 systems (CI100001, CI100002, CI100003, CI100006).