The K&N RU-1014 is a round tapered universal clamp-on air filter built around oiled cotton gauze media and a molded rubber top flange. The manufacturer lists a 6-inch flange, a 7.5-inch base outside diameter, a 5.875-inch top outside diameter, and a 6.5-inch height, so it works for custom intake tubes and fabricated piping where no vehicle-specific K&N filter exists. Because the element is washable and reusable, buyers can clean and re-oil it instead of replacing a disposable filter every service interval.
The manufacturer describes four layers of premium cotton gauze treated with a tacking agent, which it says trap harmful contaminants while maintaining airflow. That construction is the main reason to pick this filter over a generic universal cone filter for a track or drag build, where engine protection and intake flow both matter. The rubber flange absorbs vibration and helps seal against the intake. Searchers looking for a 6 inch flange universal cone air filter, a tapered cotton gauze intake filter with 7.5 inch base, or a washable reusable K&N intake filter for a custom cold air setup will find this part matches those specs.
No. The manufacturer sells it as a universal filter, so it fits any intake whose opening matches the 6-inch flange and whose tube size accepts the 7.5-inch base. Measure your intake before ordering.
The manufacturer's service kits use a degreasing cleaner that dissolves dirt and old filter oil, which is rinsed away with water. After the filter fully dries, it should be re-oiled with K&N filter oil before reinstalling.
Installation is a basic clamp-on job for most DIY builders. Measure the intake opening, slide the rubber flange over the tube, and secure it with clamps so the flange seals without distorting. Because the fit depends on your tube diameter, dry-fit before tightening, and confirm the filter clears the engine bay and any hood or fender clearance. Clean and re-oil the filter before first use, and avoid over-oiling, which can restrict flow and contaminate the mass airflow sensor on fuel-injected engines if oil migrates onto it.
