Description
The K&N Filters Universal Clamp-On Air Filter – 3.5″ FLG x 6″ B x 5.25″ T x 9″ H – Round Tapered – Black (KNNRU-3111HBK) is engineered for high airflow and superior filtration in universal performance applications. With a 3.5-inch flange diameter, 6-inch base, and 5.25-inch top outside diameter, this round tapered filter fits securely and delivers optimized engine protection. Its 9-inch height provides extended surface area, helping enhance air intake and overall efficiency. Designed with durability in mind, this black filter is washable and reusable, making it a cost-effective solution for enthusiasts and professionals alike. Ideal for custom builds or replacements, it meets the high standards of K&N Filters’ legacy in air intake solutions.
Features and Specifications:
- Flange Inside Diameter: 3.5 inches
- Base Outside Diameter: 6 inches
- Top Outside Diameter: 5.25 inches
- Filter Height: 9 inches
- Filter Shape: Round-tapered
- Filter Color: Black
- Mounting Style: Clamp-on
- Engineered Power: Advanced air filter media enhances horsepower, acceleration, and overall engine performance.
- Superior Protection: Two 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 50,000 miles, equivalent to about three 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.
- Reliable Warranty: Backed by a 1-year limited warranty for peace of mind.





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