K&N Replacement Air Filter for 2003-2006 Kawasaki KFX400 / 2003-2009 Suzuki LTZ400 / 2004-2008 Arctic Cat DVX400

K&N Replacement Air Filter for Kawasaki KFX400, Suzuki LTZ400 & Arctic Cat DVX400

Upgrade your ATV with the K&N High-Flow Air Filter (SU-4002) for Kawasaki KFX400, Suzuki LTZ400, and Arctic Cat DVX400. Washable, reusable, and engineered for maximum airflow.

The K&N Replacement Air Filter (SU-4002) is designed to increase horsepower and acceleration while offering engine protection for off-road riding. Constructed with multiple layers of oiled cotton gauze media, this filter provides increased airflow over stock paper filters without compromising filtration efficiency.

Engineered to fit directly into the OEM air box, it features an application-specific sealing bead that ensures a precise fit to block dirt and debris in harsh trail conditions. It comes pre-oiled and ready to install, eliminating the need for immediate fuel-management or jetting modifications under standard conditions. Fully washable and reusable, it serves as a long-term replacement for disposable stock filters.

Best Uses

1. Off-Road & Trail Riding: Designed for high-dust, sand, and dirt environments encountered during trail and dune riding.
2. High-Altitude ATV Performance: Helps maintain clean fuel carburetion when riding across varying elevations.
3. OEM Replacement: Ideal for replacing worn-out factory paper filters with a washable performance alternative.

Features

1. High-Flow Cotton Media: Features multi-layered woven cotton gauze to maximize air volume while trapping fine contaminants.
2. Direct OEM Airbox Fit: Molded to match the exact factory air box dimensions for simple, drop-in installation.
3. Application-Specific Sealing Bead: Ensures a tight seal along the airbox edges to prevent bypass in dusty environments.
4. Washable & Reusable Design: Can be cleaned and re-oiled repeatedly using a K&N filter care kit.
5. Pre-Oiled from Factory: Comes pre-treated with filter oil out of the box so it is ready to ride immediately.

Benefits

1. Increased Horsepower & Throttle Response: Greater airflow allows the engine to breathe better, delivering smoother power delivery.
2. Cost-Effective Long-Term Solution: Eliminates the continuous cost of purchasing disposable replacement paper filters.
3. Engine Protection: Pleated filter media offers a large surface area to trap dirt without restricting airflow.
4. No Re-Jetting Required: Operates on stock fuel settings without requiring immediate carburetor jet changes.
5. Eco-Friendly Choice: Reduces landfill waste by replacing single-use filters with a reconditionable lifetime design.

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