"With 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 maximum amount of air, all while protecting your valuable engine from harmful dirt and debris. 100% cleanable with a light blast of compressed air and requiring no oil to function properly, you'll never have to worry about your MAF sensor becoming dirty from over oiling your air filter again! Technology SuperNano-Web Air Filter, Part No. X-1127-BB, 4.00" Flange ID, 6.0" Base / 6.9" Media Height / 5" Top.