This is a premium, high-flow oil filter designed for Harley-Davidson motorcycles, built to support consistent oil pressure, reliable filtration, and easy service—especially for riders who maintain their own machines.
 
Engineered by K&N, the KN-303 uses a heavy-duty canister and internal filtration media designed to handle higher oil flow rates without sacrificing particle capture. This makes it well-suited for both everyday riding and performance-oriented V-twin engines.
 
A defining feature is the welded 17mm hex nut on the end of the filter, allowing for clean, tool-assisted removal—no crushed filter housings, no strap wrenches slipping mid-service.
 
Key Features
High-flow design for consistent lubrication
Heavy-duty steel canister for durability under pressure
17mm welded hex nut for easy installation and removal
Factory-quality filtration media designed for extended service intervals
Chrome finish for corrosion resistance and a clean engine-bay look
 
Fitment
Compatible with many Harley-Davidson models (varies by year and engine)
Always confirm fitment based on your specific motorcycle before ordering
 
What to Expect
This item ships directly from the distributor
Installation is not provided
Fitment responsibility rests with the customer
Manufacturer warranty applies
 
Who This Filter Is For
Riders who perform their own oil changes
Builders who value serviceability and clean mechanical design
Harley owners looking for a step up from basic OEM replacement filters
 
Good to know
We do not install customer-supplied parts. This product is sold for customer installation or third-party service.