The K&N universal clamp-on air filter is a universal-fit filter with a 5-inch flange, approximately 6.5-inch base diameter, a 4.375-inch top opening and about 7-inch overall height as listed. Designed for clamp-on applications, it provides a compact intake filtration option where a universal filter is required and suits a variety of custom or replacement installations that accept a 5-inch flange.
K&N Universal Clamp-On Air Filter 5in Flange 6.5in Base 7 4.375in Top 7in Height