K&N Filter with Filter Element End Increase the Performance of your Iceman Intake on 95-99 Neons This filter design is smaller in diameter, but with the filter element end, it straightens out the air flow as it enters the tube, thus increasing the velocities directing more air towards the throttle bodies and at higher speeds. This is a direct replacement for the RU-3130. It also gives more room around those using the Iceman on Automatic Neons giving better performance.