K&N Universal Air Filter - Oval Straight - 3.688in Flange ID x 10.25in Base O/S Length x 7.875in HK&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 your equipment. This universal air filter has a rigid flange for a clamp on hose connection. K&N universal air filters are washable and