AEM DryFlow Air Filter (28-20304) | Subaru WRX 2008-2014 / STI 2008-2018

The AEM DryFlow Air Filter (28-20304) is designed for 2008–2014 Subaru WRX and 2008–2018 Subaru STI applications, delivering high airflow and reliable filtration for performance-driven street and track use. Built with AEM’s oil-free DryFlow synthetic media, this filter helps support consistent engine performance while effectively trapping harmful contaminants without the need for oiling.

KEY FEATURES

• High-flow replacement air filter engineered for performance intake and airbox applications
• Oil-free DryFlow synthetic filter media provides excellent airflow and filtration efficiency
• Washable and reusable design allows long service life with simple maintenance
• No oiling required, eliminating the risk of MAF sensor contamination
• Durable construction designed to withstand daily driving and performance use

TECHNICAL SPECIFICATIONS

• Filter Media: AEM DryFlow oil-free synthetic material
• Application Type: Performance replacement air filter
• Maintenance: Washable and reusable; no oil required
• Design Intent: Balances high airflow with effective engine protection
• Performance Benefit: Supports improved airflow consistency and throttle response

VEHICLE FITMENT

• Subaru WRX 2008–2014
• Subaru STI 2008–2018

AEM Induction engineers high-performance air intake systems, filters, and airflow solutions designed to increase power, improve throttle response, and deliver reliable performance through advanced materials and proven engineering.