Collection: STI

aFe MagnumFLOW Air Filters OER PDS A/F PDS Subaru Impreza WRX STI 08-11 H4-2.5L

aFe MagnumFLOW Air Filters OER P5R A/F P5R Subaru Impreza WRX STI 08-11 H4-2.5L

K&N 2019 Subaru WRX STI 2.5L F/I Replacement Air Filter

K&N 05-08 LGT / 08-11 WRX / STi Drop In Air Filter

AEM 19-20 Subaru WRX STI 2.5L DryFlow Air Filter

AEM 07-10 Impreza / 08-10 Forester 8.75in O/S L x 8.563in O/S W x 2.438in H DryFlow Air Filter