PERRIN DRY MEDIA, DRYFLOW FILTER Universal application 2.75" I.D. inlet filter, 9" length. This is a direct replacement for the 2008-2014 WRX and 2008+ STI Cold Air Intake when installed with a PERRIN Front Mount Intercooler. It will also work on any intake system which accepts a 2.75" filter.
FILTER TECH Dryflow filters provide the same level of protection as an oiled filter, but require less maintenance, are less of a mess, and have no risk of over-oiling. The rigid screen inside and around the filter media helps in preventing damage from debris and are ideal for dusty and rough driving conditions.