Universal air filter details
K&N Filters Universal Clamp-On Air Filter – 3" ID x 3.5" OD – Round-Tapered (KNNRU-1039)
Upgrade your engine's airflow with the K&N Filters Universal Clamp-On Air Filter – 3" ID x 3.5" OD – Round-Tapered (KNNRU-1039). This high-performance air filter is designed to improve horsepower and acceleration and features a round-tapered shape for maximum filtration efficiency. The washable and reusable design ensures long-lasting performance, making it a cost-effective choice for vehicle owners. Its universal fit allows for easy installation on a variety of intake systems. Whether you're upgrading your daily driver or a performance vehicle, this air filter delivers superior airflow and protection.
Features and Specifications:
Inner Diameter (ID): 3 inches
Outer Diameter (OD): 3.5 inches
Shape: Round-Tapered
Versatile Application: It is Suitable for racing vehicles, RC cars, generators, snowmobiles, tractors, and more.
Durable Construction: Features ultra-strong, molded, pliable rubber flanges that absorb vibrations and ensure a secure fit.
Adjustable Sizing: Flanges can stretch up to 1/16 inch (1.5mm) for a precise fit.
High-Performance Filtration: Provides excellent airflow while effectively filtering contaminants.
Washable and Reusable: Designed for long-term use with easy cleaning and maintenance.
Clamp-On Design: Simple installation with a secure attachment.
Performance Boost: Engineered to enhance horsepower and acceleration.
Wide Compatibility: Available in hundreds of sizes and shapes to fit most applications.
Product identification
- Brand: K&N Filters
- Model / MPN: KNNRU-1039




