aFe Magnum FLOW Pro 5R OE Replacement Air Filter | Honda Civic Type-R (17+) (30-10277)Pro 5R Air Filter for Honda Civic Type R by aFe POWER This filter features Pro 5R oiled 5 layer progressively finer mesh cotton gauze media for maximum performance. The progressive layering of media allows the filter to flow at high levels even when dirty. aFe performance air filters use a rounded, evenly spaced pleat design which produces more usable filter surface area for increased flow and greater dust holding capacity. This pliable sealing