Universal air filter details
K&N Filters Universal Clamp-On Air Filter – 2-3/4" FLG x 5-1/16" B x 3-1/2" T x 4" H (KNNRU-5128)
The K&N Filters Universal Clamp-On Air Filter – 2-3/4" FLG x 5-1/16" B x 3-1/2" T x 4" H (KNNRU-5128) is engineered for high airflow and excellent filtration, making it a reliable choice for various performance applications. Designed with a 4-inch height, 3.5-inch top, 5-1/16-inch base, and 2-3/4-inch flange, this clamp-on air filter fits a wide range of setups. Whether used for racing, off-road, or street vehicles, it enhances engine performance while maintaining durability. This universal fit filter is washable and reusable, making it a cost-effective long-term solution.
Features and Specifications:
Flange Inside Diameter: 2-3/4 inches
Base Outside Diameter: 5-1/16 inches
Top Outside Diameter: 3-1/2 inches
Height: 4 inches
Engineered Power: Advanced air filter media enhances horsepower, acceleration, and overall engine performance.
Superior Protection: Four layers of premium cotton gauze with a specialized tacking agent trap harmful contaminants effectively.
Durable Construction: Built with high-quality materials and precision manufacturing for long-lasting performance.
Long Service Life: Under normal highway conditions, it requires cleaning only every 75,000 miles, equivalent to about five years.
Easy Installation: Pre-oiled and ready to use, making it a simple and cost-effective upgrade for better performance.
Versatile Fitment: Designed for compatibility with a wide range of applications.
Eco-Friendly: Reusable design helps reduce landfill waste from disposable filters.
Product identification
- Brand: K&N Filters
- Model / MPN: KNNRU-5128




