K&N Motorcycle Oil Filter KN-204 — High-Flow Black Filter with 17mm Nut, Synthetic-Media Protection

The K&N KN-204 is a high-flow motorcycle oil filter with a 17mm exposed nut, metal canister, and synthetic-media filtration engineered for use with synthetic or conventional oils.

Built for riders who want reliable engine protection without sacrificing oil flow, the K&N KN-204 replaces OE filters on many Honda, Kawasaki, Triumph, and Yamaha models. The filter pairs a heavy-duty steel can with resin-impregnated synthetic media to capture contaminants while minimizing pressure drop. Its black finish and integrated 17mm nut make removal and service fast, and features such as an anti-drainback valve (when applicable) help preserve oil at shutdown.

How does the KN-204 help maintain oil flow during spirited riding?

The KN-204 is designed to minimize pressure drop so oil moves freely through the filter under varying engine loads. Reduced flow restriction supports consistent oil delivery for temperature and stress fluctuations common in motorcycle riding.

• Modern synthetic filter media reduces clogging and keeps flow steady.
• Resin-impregnated layers trap up to 99% of harmful particles.
• Heavy-gauge metal canister resists deformation at high pressure.

What makes the 17mm exposed nut useful for maintenance?

The integrated 17mm nut speeds removal and installation with a single wrench instead of specialty tools. This practical feature saves time during oil changes at home or on the roadside.

• Standard 17mm wrench access simplifies filter changes.
• Exposed nut removes the need for strap or cap wrenches.
• Durable nut attachment reduces rounding or tool slippage.

Will the KN-204 work with my bike’s oil type and anti-drainback needs?

Yes. The KN-204 is compatible with both synthetic and conventional motor oils and is built with modern filtration media suited to either type. Where the motorcycle’s design requires it, the filter includes an anti-drainback valve to help prevent dry starts by keeping oil in the filter after shutdown.

• Suitable for synthetic and conventional oils without performance compromise.
• Anti-drainback valve included on applicable fitments to prevent oil loss at shutdown.
• Resin-treated media retains strength and filtration efficiency over service intervals.

Which motorcycles are compatible with the K&N KN-204?

The KN-204 fits a range of popular motorcycle makes—commonly used as an OE replacement for select Honda, Kawasaki, Triumph, and Yamaha models. Always verify fitment with your bike’s manual or a parts lookup to confirm compatibility before purchase.

• Commonly replaces OE filters on Honda sport and standard bikes.
• Fits many Kawasaki and Yamaha street and adventure models.
• Available as a direct-fit option for certain Triumph applications.

Who is this for: The K&N KN-204 is aimed at riders and home mechanics who want a durable, easy-to-service oil filter that balances filtration efficiency with unrestricted oil flow. It’s a practical choice for owners of compatible Honda, Kawasaki, Triumph, and Yamaha motorcycles who change their own oil or want a reliable OEM-replacement filter for routine maintenance.