Panel Drop In

See details K&N Filter Replacement for Subaru WRX/STi SKU: KN-33-22320 This K&N filter is a great upgrade for those looking for great performance with little troubles. The K&N replacement filter replaces the OEM one and requires no additional modifications. Install is a breeze and is only a matter of minutes. No need to hire a mechanic to install your intake, this c... Our price: $45.00 See details Perrin 08 WRX/STi Drop in Filter SKU: PSP-INT-110 Perrin Drop in filter for 08 WRX/STi Our price: $38.00 See details Perrin Drop in Panel Filter 02-07 WRX/STi SKU: PSP-INT-100 FILTER PANEL 02-07 WRX/STI/BAJA Market price: $39.99 Our price: $37.95 , save 5%