Description

The K&N Filters Custom Air Filter – 9″ OD x 8″ ID x 3.5″ H (KNNE-3551) is engineered for custom applications where precise fit and high airflow are critical. With a 9-inch outer diameter, 8-inch inner diameter, and 3.5-inch height, this round air filter is ideal for custom intake systems and performance modifications. Designed by K&N Filters, it offers durability, is washable and reusable, and supports optimal engine performance by providing clean and efficient airflow. It is perfect for automotive upgrades where standard filters don’t fit.

Features and Specifications:

Outside Diameter: 9 inches
Inside Diameter: 8 inches
Height: 3.5 inches
Performance boost: Increases horsepower and acceleration for enhanced engine output.
Versatile application: Engineered for Off-Road, Motocross, ATVs, UTVs, and Side-by-Sides.
High-flow design: Pleated cotton media offers a large filtration area with low airflow restriction.
Superior filtration: Multiple layers of woven cotton gauze ensure excellent contaminant capture.
OEM fitment: Installs directly into the factory air box with a custom sealing bead for a secure fit.
No tuning needed: Delivers performance gains without requiring fuel management adjustments.
Reusable convenience: Washable and reusable; most units come pre-oiled and ready to install.
Warranty coverage: Backed by a one-year limited warranty for peace of mind.