Universal air filter details
K&N Filters Universal Clamp-On Air Filter Round Tapered (KNNRX-3800)
The K&N Filters Universal Clamp-On Air Filter Round Tapered (KNNRX-3800) is designed for high airflow and efficient filtration in custom intake systems. This filter features a 2-7/16-inch flange with a 20-degree angle, offering a secure fit and optimized performance. Its round, tapered shape with a 4-1/2-inch base, 4-inch top, and 6-1/8-inch height allows compatibility with various applications. Built with washable and reusable materials, this clamp-on air filter supports extended service life without sacrificing performance.
Features and Specifications:
Air Filter Shape: Round Tapered
Air Filter Material: Cotton Gauze
Flange Type: Angled
Top Style: X-Stream
Mounting Type: Clamp-on
Flange Inside Diameter: 2-7/16 in (62 mm)
Flange Angle: 20 degrees
Base Outside Diameter: 4-1/2 in
Top Outside Diameter: 4 in
Filter Height: 6-1/8 in
Pleated Filter: Built into the top for enhanced filtration efficiency.
Reusable Design: Washable construction allows for multiple uses.
Low Restriction: Promotes improved airflow and engine performance.
Clamp-On Mount: Easy installation with a secure fit.
Product identification
- Brand: K&N Filters
- Model / MPN: KNNRX-3800




