K&NMotorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils, Wrench Off Nut: Fits Select Harley Davidson Motorcycles, KN-171B

K&NMotorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils, Wrench Off Nut: Fits Select Harley Davidson Motorcycles, KN-171B

Q: Amazon needs to fix the fact that this filter does in fact, fit a 2018 harley davidson fat bob fxfb... cuz i use it all the time.

You can go the K&N webpage (link below) for this particular filter. There is a fitment guide there. According to that website this will fit a 2010 Fat Bob and several others.

Q: does this filter a kn171b replace a 63798-99A

The 63798-99A would cross-reference to the K&N KN-171B Oil Filter.

Q: Can I use this filter on my 2019 fatboy 107?

Not sure. A 2002 Lexus 300 SUV is the same filter as this I do know.

Q: Will this work on a2016 wide glide 103 engine

This fit the 103 Harley Twin I have. Ultimately, put your make and model into your garage in Amazon and it will let you know if it applies. I suspect it will fit all 103 engines.

4.8/5

Product ID: 3981525

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Details

Brand
K&N
Product Grade
Performance
Vehicle Service Type
Motorcycle
Item dimensions L x W x H
4 x 3 x 3
Outside Diameter
2.91 Inches

🔧Wrench-Off nut for effortless removal

⚙️High flow rate for peak engine performance

🛡️Pleated synthetic-blend media traps harmful contaminants

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K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils, Wrench Off Nut: Fits Select Harely Davidson Motorcycles, KN-171B

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Description

🛵 Ride Clean, Ride Confident: Premium Filtration for Your Harley

TESTED TRUSTED - Laboratory-verified burst strength and filtration capacity for peace of mind
HEAVY DUTY DURABILITY - Robust canister construction built to withstand rigorous riding conditions
EFFORTLESS MAINTENANCE - Wrench-Off nut design ensures quick, no-fuss filter changes—stay on the road longer
UNMATCHED FLOW EFFICIENCY - Engineered for exceptional oil flow to maximize power and longevity
UNIVERSAL OIL COMPATIBILITY - Seamlessly works with synthetic, conventional, and blended oils for ultimate versatility

The K&N KN-171B Motorcycle Oil Filter delivers high-performance oil flow and superior filtration using pleated synthetic-blend media. Designed specifically for select Harley Davidson motorcycles, it supports synthetic and conventional oils, features a heavy-duty canister for durability, and includes a wrench-off nut for easy removal. Laboratory tested for strength and capacity, this filter ensures extended service intervals and reliable engine protection.

Specifications

Brand	K&N
Product Grade	Performance Part
Vehicle Service Type	Motorcycle
Item dimensions L x W x H	4 x 3 x 3 inches
Outside Diameter	2.91 Inches
Thread Size	M17 x 1.5
Item Weight	9.6 ounces
OEM Part Number	KN-171B
Global Trade Identification Number	00024844087737
Manufacturer	K&N Engineering
Number of Items	1
Automotive Fit Type	Vehicle Specific Fit
UPC	759173941725 182683047043 024844087737
Model	Oil Filter
Product Dimensions	4 x 3 x 3 inches
Item model number	KN-171B
Is Discontinued By Manufacturer	Yes
Exterior	Other
Manufacturer Part Number	KN-171B
Safety Rating	Não Aplicável

Have a Question? See What Others Asked

Amazon needs to fix the fact that this filter does in fact, fit a 2018 harley davidson fat bob fxfb... cuz i use it all the time.

does this filter a kn171b replace a 63798-99A

Can I use this filter on my 2019 fatboy 107?

Will this work on a2016 wide glide 103 engine

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