Injen AMSOIL Replacement Nanofiber Dry Air FIlter 5in Flange Diameter/6.5in Base/5in Height/70 PleatWith a rich history in racing and the street performance, Injen Technology has proven itself as a leader in filtration engineering and technology. Lab tested and race proven, Injen's air filter line features state of the art designs and performance. All SuperNano Web air filters feature a proprietary media that includes and high flow base media with a highly efficient Nano membrane applied on top. This allows our SuperNano Web media to flow the