K&N Universal Rubber Filter – KRU-3230K&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. All filters are constructed with ultra strong moulded pliable rubber flanges which absorb vibration and allow for secure