08-21 WRX STI Perrin Drop-In Panel Filter | PSP-INT-110

Perrin Drop-In Panel Filter – Subaru WRX / STI / Legacy GT / Crosstrek / Forester XT

2-stage foam drop-in replacement filter for your stock airbox. Improves airflow and filtration without any modifications — a simple, effective upgrade for daily drivers and built cars alike.

• 2-stage foam filtration element for improved airflow over the OEM paper filter
• Special oil coating captures dirt particles while allowing unrestricted airflow
• Drop-in fitment — installs directly into the factory airbox, no modifications needed
• Washable and reusable — clean with Perrin cleaning kit (sold separately)
• Made in the USA

Fitment

• 2008–2021 Subaru WRX / WRX STI
• 2005–2009 Subaru Legacy GT
• 2013–2017 Subaru Crosstrek
• 2014–2015 Subaru Forester XT

Part Number

PSP-INT-110

Proposition 65

WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov