The PERRIN High-Flow Washable Replacement Air Filter is the last filter you will ever need to buy. It is washable and will increase horsepower with very little work to install, making it one of the easiest upgrades for your car!
Dual-stage open cell foam, washable and reusable
Drop-in panel design - direct replacement for the OEM filter, no tools required
Increases horsepower and torque without ECU recalibration or tune
Includes (1) PERRIN Panel Filter, warranty and instructions
Fits: 2019-2021 Subaru WRX STI (incl. Type RA) per wheelflip.com + kenjigarage.com + streetfx.com.au + shop.sohiperformance.com
PERRIN part number PSP-INT-114
Prop 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
![JDMuscle Perrin [19-21 WRX STI] Panel Filter | PSP-INT-114](http://iwujiperformance.com/cdn/shop/files/perrin-19-21-wrx-sti-panel-filter-psp-int-114-5723015.jpg?v=1786739984&width=1946)
![JDMuscle Perrin [19-21 WRX STI] Panel Filter | PSP-INT-114 - View 2](http://iwujiperformance.com/cdn/shop/files/perrin-19-21-wrx-sti-panel-filter-psp-int-114-9019895.jpg?v=1786739984&width=1946)
![JDMuscle Perrin [19-21 WRX STI] Panel Filter | PSP-INT-114 - View 3](http://iwujiperformance.com/cdn/shop/files/perrin-19-21-wrx-sti-panel-filter-psp-int-114-8670404.jpg?v=1786739984&width=1946)
![JDMuscle Perrin [19-21 WRX STI] Panel Filter | PSP-INT-114](http://iwujiperformance.com/cdn/shop/files/perrin-19-21-wrx-sti-panel-filter-psp-int-114-5723015.jpg?v=1786739984&width=1445)
![JDMuscle Perrin [19-21 WRX STI] Panel Filter | PSP-INT-114 - View 2](http://iwujiperformance.com/cdn/shop/files/perrin-19-21-wrx-sti-panel-filter-psp-int-114-9019895.jpg?v=1786739984&width=1445)
![JDMuscle Perrin [19-21 WRX STI] Panel Filter | PSP-INT-114 - View 3](http://iwujiperformance.com/cdn/shop/files/perrin-19-21-wrx-sti-panel-filter-psp-int-114-8670404.jpg?v=1786739984&width=1445)