aFe Power 21-90015 Universal Clamp On Filter 5-1/2 F x 7 B x 5-1/2 T x 8 H in Improves airflow for better performance and acceleration Oil-free for easy quick servicing and yet washable/reuseable air filter for long service life with life-time warranty Pro DRY S Three-Layer Progressively finer porosity synthetic media for high airflow with high filtration efficiency. Tall, Rounded, evenly-spaced pleats for maximum dust holding capactiy Flange: 5-1/2, Base: 7, Top: 5-1/2, Height: 8