K&N RU-5111: RU-5111 Round Tapered Universal Clamp-On Air Filter
3'' (76 mm) Flange Diameter
Round Tapered Universal Clamp-On Air Filter Flange Inside Diameter: 3" (76 mm) Flange Length: 0.75" (19 mm) Flange Type: Centered Height: 5.75" (146 mm) Base Outside Diameter: 4.5" (114 mm) Top Outside Diameter: 3.5" (89 mm)