aFe Magnum FLOW Universal Square Racing Filter w/ Pro GUARD 7 Media (18-87006) 1411 looking at the front end

looking at the front end of the 2015-2017 Subaru WRX and STI - it sure looks like the car's missing something

STILLEN has long been associated with Infiniti performance parts

Dyno Proven gains of up to 23 hp and 65 lb-ft

Submodel: SXT

aFe Magnum FLOW Universal Square Racing Filter w/ Pro GUARD 7 Media (18-87006) 1411 looking at the front endThe aFe Pro GUARD7 performance air filter represents the next generation of performance filtration. The Pro GUARD7 air filter is constructed of pliable urethane with a bump seal for a leak free seal. The filter media is constructed of 7 layers, 5 layers of progressive cotton gauze and 2 layers of synthetic dry media for maximum filtration. This filter is built to endure the most extreme conditions. (US PAT 06811588) Features: Provides Maximum Airflow