The PERRIN Hi-Power Cold Air Intake for the 2018-2021 Subaru WRX STI replaces the restrictive factory airbox with a CNC mandrel-bent aluminum intake tube, proper MAF alignment, and an airflow straightener - adding 15-30 WHP with no tuning required.
Fits 2018-2021 Subaru WRX STI
CNC mandrel-bent aluminum intake tube with CNC-machined MAF sensor bung
Airflow straightener improves MAF readings for consistent, reliable power
Dryflow filter provides oiled-filter protection with less maintenance and no risk of over-oiling
Neon yellow powder-coated finish; aggressive intake sound under acceleration
![JDMuscle Perrin [18-21 STI] Hi-Power Cold Air Intake Neon Yellow | PSP-INT-326NY](http://iwujiperformance.com/cdn/shop/files/perrin-18-21-sti-hi-power-cold-air-intake-neon-yellow-psp-int-326ny-4187199.jpg?v=1786739929&width=1946)
![JDMuscle Perrin [18-21 STI] Hi-Power Cold Air Intake Neon Yellow | PSP-INT-326NY - View 2](http://iwujiperformance.com/cdn/shop/files/perrin-18-21-sti-hi-power-cold-air-intake-neon-yellow-psp-int-326ny-4538013.jpg?v=1786739929&width=1946)
![JDMuscle Perrin [18-21 STI] Hi-Power Cold Air Intake Neon Yellow | PSP-INT-326NY - View 3](http://iwujiperformance.com/cdn/shop/files/perrin-18-21-sti-hi-power-cold-air-intake-neon-yellow-psp-int-326ny-9598930.jpg?v=1786739929&width=1946)
![JDMuscle Perrin [18-21 STI] Hi-Power Cold Air Intake Neon Yellow | PSP-INT-326NY - View 4](http://iwujiperformance.com/cdn/shop/files/perrin-18-21-sti-hi-power-cold-air-intake-neon-yellow-psp-int-326ny-3833311.jpg?v=1786739929&width=1946)
![JDMuscle Perrin [18-21 STI] Hi-Power Cold Air Intake Neon Yellow | PSP-INT-326NY](http://iwujiperformance.com/cdn/shop/files/perrin-18-21-sti-hi-power-cold-air-intake-neon-yellow-psp-int-326ny-4187199.jpg?v=1786739929&width=1445)
![JDMuscle Perrin [18-21 STI] Hi-Power Cold Air Intake Neon Yellow | PSP-INT-326NY - View 2](http://iwujiperformance.com/cdn/shop/files/perrin-18-21-sti-hi-power-cold-air-intake-neon-yellow-psp-int-326ny-4538013.jpg?v=1786739929&width=1445)
![JDMuscle Perrin [18-21 STI] Hi-Power Cold Air Intake Neon Yellow | PSP-INT-326NY - View 3](http://iwujiperformance.com/cdn/shop/files/perrin-18-21-sti-hi-power-cold-air-intake-neon-yellow-psp-int-326ny-9598930.jpg?v=1786739929&width=1445)
![JDMuscle Perrin [18-21 STI] Hi-Power Cold Air Intake Neon Yellow | PSP-INT-326NY - View 4](http://iwujiperformance.com/cdn/shop/files/perrin-18-21-sti-hi-power-cold-air-intake-neon-yellow-psp-int-326ny-3833311.jpg?v=1786739929&width=1445)