The AirAid Jr. system is a combination of AirAid's Premium Direct Fit Replacement Filter and Modular Intake Tube (M.I.T.). The AirAid Jr. is an entry-level system that will give your Tundra the performance increases you want at an economical price. All necessary mounting hardware is included and the instructions are easy to follow. The best thing about the AirAid Jr system is that it increases performance and is very simple to install.