K&N RU-1400 UNIVERSAL Clamp-On Air Filter 1-15/16"20 DEG FLG, 3-1/2"OD, 4"HDescription K&N RU 1400 UNIVERSAL Clamp On Air Filter 1 15 16"20 DEG FLG, 3 1 2"OD, 4"H K&N Universal Air Filters are designed and manufactured for a wide range of applications, including racing vehicles, radio controlled cars, generators, snowmobiles, tractors, and more. These filters accommodate various air intake angles and offset diameters, offering a solution for most equipment. Each filter features ultra strong molded pliable rubber flanges that