K&N Performance Intake Kit for Ford C-Max/Focus II / Volvo C30/S40/V40/V50/V70 / Mazda 3/5 Exterior Styling>Hood Struts View the AEM-21-791C vehicle applications

View the AEM-21-791C vehicle applications to determine the legal status for each vehicle

Digital Boost/Vacuum gauges are also available for gasoline or lower boost applications

Injen is proud to say that the EVO1501 Evolution Cold Air Intake system is the very best intake system for your Civic Si that money can buy

The all new Jeep Wrangler JL has taken the world by storm

acts as a guard against track and road debris

K&N Performance Intake Kit for Ford C-Max/Focus II / Volvo C30/S40/V40/V50/V70 / Mazda 3/5 Exterior Styling>Hood Struts View the AEM-21-791C vehicle applicationsThe K&N 57S 4000 Performance Airbox replaces the restrictive factory air filter and air box lid. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57S 4000 Performance Airbox comes with an