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The AEM Dryflow drop-in air filter for 2019–2020 Subaru WRX STI 2.5L is an oil-free, washable synthetic filter engineered to balance high airflow with particle filtration and long-term service. Its Dryflow media simplifies cleaning without oil and aims to maintain consistent performance. Backed by a limited lifetime warranty, this drop-in replacement fits the factory airbox and is positioned as a maintenance-friendly upgrade for daily and spirited driving.
AEM 19-20 Subaru WRX STI 2.5L DryFlow Air Filter
