K&N Filters universal rubber air filter details
K&N Filters Universal Rubber Air Filter – 2-1/4" 20° FLG x 3-1/2" OD x 4" H (KNNRU-1700)
The K&N Filters Universal Rubber Air Filter – 2-1/4" 20° FLG x 3-1/2" OD x 4" H (KNNRU-1700) is designed for high performance and adaptability. This filter is ideal for various custom applications, providing reliable filtration with a universal fit. With a 2.25-inch flange, a 3.5-inch outer diameter, and a total height of 4 inches, it ensures optimal airflow while maintaining engine protection. Whether building a custom intake or replacing an older filter, this universal rubber air filter offers durability and precision for many setups.
Features and Specifications:
Flange Inside Diameter: 2-1/4 inches
Flange Angle: 20 degrees
Outer Diameter: 3.5 inches
Filter 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-1700




