K&N Universal Clamp-On Air Filter 3in Flange ID x 5in Base OD x 3.5in Top OD x 6in HeightBrand K&N Engineering Part Number RU 1039 Category Air Filters Air Filters Universal Fit Condition Brand New Original Manufacturer Packaging K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for