K&N KN-171C Premium Powersports Oil Filter, Chrome - Replaces Harley-Davidson 63731-99
Not sure about fitment or have a question?
Contact us with your vehicle's make, model and year or VIN, and we can help confirm fitment before you order.
The K&N KN-171C Premium Powersports Oil Filter in chrome is a high-flow replacement for the Harley-Davidson 63731-99 chrome oil filter. It is one of the best oil filter upgrades for Harley-Davidson and Buell motorcycles because it pairs a heavy-duty chrome canister with a welded 17mm Wrench-Off nut for fast, easy removal at every oil change.
K&N premium oil filters for powersports vehicles utilize an innovative, highly efficient synthetic-blend filtration media designed to be compatible with synthetic, petroleum-based, and blended oils, including the high concentrations found in synthetic racing oils. The heavy-duty canister is engineered to be exceptionally durable, and a 17mm welded hex nut can be used for quick and easy filter removal. Engineered to support exceptionally high flow rates while providing outstanding protection from harmful engine contaminants, each filter is specifically designed to withstand the service intervals recommended by vehicle manufacturers.
Features:
- Pleated synthetic-blend filtration media
- Traps up to 98% of contaminants at 30 microns
- Engineered for high oil flow rates for better engine performance
- Heavy-duty, chrome-plated canister for high burst strength
- Integrated 17mm Wrench-Off nut makes removal easy
- Pre-drilled nut for safety wire attachment
- Silicone anti-drainback valve for cold engine start-up protection
- Filter bypass relief valve
- Laboratory tested to ensure excellent capacity, efficiency, and mechanical strength
- Designed to operate with all synthetic, conventional, and blended motor oils
- Approved for racing use by MotoAmerica and the AMA
Fitment:
Harley-Davidson / Buell:
- Select Harley-Davidson and Buell motorcycles
- Replaces Harley-Davidson OEM chrome filter 63731-99 / 63731-99A
- Also cross-references Harley-Davidson 62700296, 63796-77A, 63798-99, 63798-99A and 63805-80A
Please confirm the correct filter for your motorcycle with your owner's manual or the K&N application guide before ordering.
Specifications:
- Brand: K&N
- Part Number: KN-171C
- UPC: 024844087232
- OEM Replacement: Harley-Davidson 63731-99
- Oil Filter Style: Canister (spin-on)
- Finish: Chrome plated
- Outside Diameter: 2.906 in.
- Height: 3.703 in. (94 mm)
- Thread: 3/4 in.
- Removal Nut: 17mm, cross-drilled for safety wire
- Filter Bypass Relief Valve: Yes
- Anti-Drainback Valve: Yes
- Quantity: Sold individually
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