Description
The K&N Filters Universal Clamp-On Air Filter – 2.875″ ID x 3.5″ OD – Round tapered – Black (KNNRU-4570) is designed to improve airflow and engine performance in various vehicles. Featuring a round tapered shape, this clamp-on air filter has a 2.875-inch inner diameter and a 3.5-inch outer diameter, making it ideal for custom applications where space is limited but performance is essential. Its durable construction and washable cotton gauze media allow long-term use without compromising filtration efficiency. Perfect for automotive enthusiasts and tuners looking to optimize engine performance without a full intake system replacement, this black clamp-on filter offers flexibility, reliability, and ease of installation.
Features and Specifications:
- Inner Diameter: 2.875 inches
- Outer Diameter: 3.5 inches
- Shape: Round tapered
- Installation Type: Clamp-on
- Color: Black
- 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.
- Reliable Warranty: Backed by a 1-year limited warranty for peace of mind.





Reviews
There are no reviews yet.