K&N High Flow Air Filter for Kawasaki KFX400 ATV
K&N High Flow Air Filter for Kawasaki KFX400 ATV
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Description
K&N Powersports High-Flow Air Filter
Upgrade your machine’s performance with a K&N High-Flow Powersports Air Filter. Designed to increase airflow while providing superior filtration, these premium reusable filters help your engine breathe better for improved horsepower, throttle response, and overall performance.
Built with oiled cotton gauze media, K&N filters capture dirt and debris while allowing more air to reach the engine compared to traditional paper filters. The result is better performance and long-term reliability for motorcycles, ATVs, UTVs, and other powersports machines.
Unlike disposable filters, K&N air filters are washable and reusable, helping reduce maintenance costs over time. With proper cleaning and oiling, one filter can last for the life of your vehicle.
Key Features
High-flow design improves airflow and engine performance
Superior filtration protects your engine from dirt and debris
Washable and reusable for long-term value
Durable oiled cotton gauze construction
Direct OEM replacement for easy installation
Designed specifically for motorcycles, ATVs, UTVs, and other powersports applications
Why Choose K&N?
K&N is a global leader in high-performance filtration, trusted by riders and racers worldwide. Their powersports air filters are engineered to deliver maximum airflow without sacrificing engine protection, helping you get the most out of your ride.
Technical Specifications
- MFG. Part Number DU-9001
Vehicle Information
Kawasaki KFX400 ATV (2003-2006)
The Kawasaki KFX400, produced from 2003 to 2006, was a popular sport ATV renowned for its performance and agility. This model shared its core platform with the Suzuki LT-Z400. It was powered by a 398cc, liquid-cooled, single-cylinder, DOHC, 4-stroke engine, paired with a 5-speed manual transmission including reverse. While maintaining consistent core specifications, the KFX400 received notable updates. For 2005, power output was enhanced with a carburetor change (from Mikuni BSR36 to a 37mm CV-style with TPS) and higher lift intake/exhaust cams. Suspension shocks were also updated between the 2004 and 2005 models. The compression ratio saw a slight increase from 11.3:1 (2003-2004) to 11.6:1 (2006), and dry weight increased from 168 kg (2003-2004) to 170 kg (2005-2006). The KFX400 generally offered a single, well-equipped trim, with occasional special graphics packages. Q: How do I know which parts fit my Kawasaki KFX400?
A: To ensure perfect compatibility, please use the year and edition selector at the top of this page.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | Every 50 hours, 800 km, or annually | Whichever comes first. Check oil level every 10 hours. |
| Air Filter | Check and clean every 10 hours | Clean paper elements every 100 hours; replace every 200 hours or annually. Replace if worn, damaged, or dirty after cleaning. |
| Spark Plug | Inspect around every 100 hours | Replace as needed. |
| Coolant | Change every 200 hours or every 2 years | Regularly check levels, especially in hot weather or during extended rides. |
| Drive Chain | Check tension before every ride; clean and lubricate every 10 hours |