aFe 30-10130 Pro 5 R Magnum Flow OE Direct Replacement Air Filter for Honda Gas Cars Civic L4 1.8L Deep Cotton Pleats for Increased Flow Fits In Factory Housing High Flow For Increased Performance Limited Lifetime Warranty Progressive 5 Layer Cotton Gauze Material Improves airflow for better performance and acceleration Pre-oiled, washable/reuseable air filter for long service life with life-time warranty Pro-5 R Five-Layer Progressively finer mesh cotton media for high airflow with high filtration efficiency. Tall, Rounded, evenly-spaced pleats for maximum dust holding capacity Constructed with 100% pliable polyurethane for great seal without use of foam gaskets or sealing grease