Not legal for sale in California The K&N 69-6010TS Typhoon cold-air intake system is a free-flowing, mandrel-bent aluminum tube air induction system designed to fit some Mazda 3 and Mazda 5 Van models. The restrictive factory air filter and air intake housing are replaced by the K&N Typhoon cold-air intake which is designed to pull in relatively cooler air and dramatically reduce air flow restriction by smoothing and straightening air flow. This allows your engine to inhale a larger amount of denser air than the factory air intake. More air means more usable power and acceleration throughout the engine's RPM range