aFe Magnum FLOW OE Replacement Air Filter w/ Pro 5R Media (30-10170) _Helmholtz Gains of 2 WHP and

Gains of 2 WHP and 2 ft/lbs of TQ comapred to stock

Durable construction withstands temperatures up to 1500°F and reaches efficiency within 9 seconds of startup

the front end of the WRX and STI has a tendency to move around which equate to less then predictable handling

It offers improved cold viscosity in order to reduce wear during engine start

5L without sacrificing drivabilityor reliability by optimizing the engine's performance

aFe Magnum FLOW OE Replacement Air Filter w/ Pro 5R Media (30-10170) _Helmholtz Gains of 2 WHP andMagnum Flow Pro 5R Panel Blue Air Filter (30 10170) by aFe. Constructed with 100% polyurethane on all four sides, this high flow, oiled OE replacement performance filter will outflow the stock paper filter for improved horsepower and torque. The Pro 5R air filter uses five layers of progressively finer mesh cotton gauze media to provide maximum airflow for best performance results. Washable and reusable for multiple cleaning cycles, the tall, open,