K&N Engineering knn69-8004TTK

The K&N Typhoon cold air intake for 2008–2014 Subaru Impreza WRX (2.5L H4) uses a mandrel‑bent aluminum intake tube paired with a washable, reusable High‑Flow oiled cotton filter to increase horsepower and torque. The oversized conical filter can allow up to 100,000 miles between services under normal highway driving; a custom heat shield protects intake air. Backed by K&N's No‑Hassle limited warranty and stated not to void vehicle warranty; check CARB status for California fitments.