For Honda Civic Si Aluminum Cold Air Intake System (6.3"H Open-Top Red Filter) EP3 EP Helps engine to draw in more and colder air; resulting in better throttle response and higher explosive horsepower output Lightweight Intake Tubing Removes Restriction From Stock Pipes High-Flow Air Filter Material Made of Micro Cotton Gauze, washable and reusable Improves filtration efficiency up to 95% Tubing made from aluminum, built For durability & strength