AEM's DryFlow replacement air filter uses advanced synthetic filtration media that balances high airflow, strong particle filtration, and long-term durability. Built from oil-free filter material, it installs directly into the factory air box location for easy cleaning and consistent performance.
Specifications:
- Filter Media: Oil-free synthetic DryFlow material
- Fit: Direct OE-replacement, factory air box location
- Maintenance: Washable and reusable
- Warranty: AEM Limited Lifetime Warranty
- Installation: Will not void vehicle's factory warranty
- Part Number: 28-50092
Vehicle Applications
- 2019 Subaru WRX STI Base
- 2020 Subaru WRX STI Base
- 2021 Subaru WRX STI Base
- 2019 Subaru WRX STI Limited
- 2020 Subaru WRX STI Limited
- 2021 Subaru WRX STI Limited
- 2019 Subaru WRX STI S209
FAQ
Is the AEM 28-50092 a direct-fit replacement filter?
Yes, it installs in the factory air box location on 2019-2021 Subaru WRX STI models with no modification required.
Is the AEM DryFlow filter washable and reusable?
Yes, it uses oil-free synthetic DryFlow media designed for washing and reuse rather than one-time disposal.
Will installing this filter void the factory warranty?
No. AEM states this filter will not void the vehicle's factory warranty, and it is backed by AEM's Limited Lifetime Warranty.

