aFe Magnum FLOW Air Filter for 2012-2020 Subaru WRX (30-10161/31-10161) Select Air Filter::DRY S Grey (31-10161) • Vacuum Hose Y-Fitting

• Vacuum Hose Y-Fitting

Stabilizes oil pressure inside engine

• Fully Reversible Back to OEM Spec with No Modifications Needed

Faster response time improves wideband feedback control

Height: Width: Thickness: Part Number: 4" 10" 1

aFe Magnum FLOW Air Filter for 2012-2020 Subaru WRX (30-10161/31-10161) Select Air Filter::DRY S Grey (31-10161) • Vacuum Hose Y-FittingThe Pro 5R air filter and Pro DRY S air filter are both high performance OE replacement filters designed to outflow stock paper filters, improving horsepower and torque. The Pro 5R features five layers of progressively finer cotton gauze for maximum airflow, while the Pro DRY S uses three layers of synthetic media for easy maintenance and convenience. Both filters are washable, reusable, and constructed with 100% polyurethane for durability.