K&N KN-171C Chrome Performance Oil Filter

The K&N KN-171C combines high-flow synthetic filtration with a polished chrome finish made for motorcycles where the oil filter stays visible. Its heavy-duty spin-on canister, pre-lubed gasket, anti-drainback valve, and built-in 17 mm hex nut make routine oil changes cleaner and considerably less aggravating.

The Breakdown

✨ Chrome Finish – Polished exterior provides a clean look on bikes with an exposed oil filter.

⚙️ Synthetic Filter Media – Uniform pleated media provides high capacity, strong filtration, and the flow rates needed for synthetic and synthetic-blend oils.

🔧 17 mm Hex Nut – Built-in nut allows easier wrench-off removal with standard tools.

🏁 Safety-Wire Ready – Hex nut is pre-drilled for safety-wire security.

💧 Anti-Drainback Valve – Helps retain oil inside the filter and reduce dry starts where applicable.

🛠️ Heavy-Duty Construction – Reinforced canister, base plate, and double-rolled seal are built for demanding riding conditions.

✅ Pre-Lubed Gasket – Arrives ready for installation without wrestling with a dry seal.

🔄 OEM Replacement – Cross-references Harley-Davidson part numbers 63731-99, 63731-99A, 63796-77A, 63798-99, and 63798-99A.

Fits a wide range of select Harley-Davidson and Buell motorcycles. Verify the year, model, and OEM filter number before installation—because guessing at engine parts is a shitty maintenance plan.