K&N 06 GM Trailblazer/Envoy L6-4.2L Performance Intake KitThe K&N 57 3062 FIPK air intake system replaces the restrictive factory air filter and air intake. K&N intakes are designed to dramatically reduce intake restriction as they 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 57 3062 air intake comes with a black rubber topped K&N high flow