The AEM 28-50092 is a replacement panel air filter for the 2019-2020 Subaru WRX STI H4-2.5L F/I, built on AEM's DryFlow non-woven synthetic media. The manufacturer lists it at 9.063 in long by 8.375 in wide and 1.5 in tall (230 x 213 x 38 mm), so it is sized as a direct element swap rather than a full intake kit.
The main case for this filter is reuse. The manufacturer describes the oil-free media as washable and designed to last the life of the vehicle, and it carries a limited lifetime warranty, which avoids the recurring cost of disposable paper elements. AEM also markets it for dusty, high-stress driving where airflow must hold up under pressure. Set realistic expectations on power: the manufacturer does not publish a horsepower figure for this filter alone, and owners on user forums generally tie intake gains to a tune, so treat this as a filter upgrade rather than a standalone power number.
Shoppers searching for a 2019-2020 WRX STI DryFlow panel filter, a washable WRX STI drop-in air filter, or an AEM 28-50092 replacement will find this matches. Replacement is a matter of opening the stock airbox and seating the new panel. Torque and clip specifications were not confirmed in our research, so check the manufacturer's instructions before service.
The manufacturer lists this filter for the 2019-2020 Subaru WRX STI with the H4-2.5L F/I engine. Confirm your specific application with the manufacturer before ordering if your car differs from that listing.
Yes. The manufacturer states the DryFlow media is washable and reusable and needs no oil. The manufacturer's cleaning procedure and recommended interval were not confirmed in our research, so follow the care instructions supplied with the filter.
