K&N 66-3000 K&N X-Stream Round Custom Top Assembly Filter - Red 12in ID 5.125in Inlet Dia 2.313in HeightK&N 66 3000 K&N X Stream Round Custom Top Assembly Filter Red 12in ID 5. 125in Inlet Dia 2. 313in Height Not only does the K&N XStream add filter area, it actually redirects airflow inside the filter to pull in more air through the side pleats for even greater performance efficiency. Cleanable and reusable, the XStream Air Flow Top filter delivers the best protection available for your engine. Washable and reusable air filter Air filter top adds