RK-3955 K&N Intake System-Harley Davidson

$339.99
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SKU
RK-3955
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Intake System-Harley Davidson
K&N Street Metal Air Intake Systems for Harley Davidson Dyna, Softail, Touring and Twin-Cam Model motorcycles increase power by eliminating the restrictive stock OE air cleaner and replacing it with an oversized K&N High-Flow Air Filter™ and a cast aluminum high-volume aluminum housing. K&N high-flow intake systems give your Harley® an aggressive appearance while providing a significant increase in airflow resulting in more power.
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Cast aluminum high-volume, performance air intake housing
  • Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
  • Integrated internal velocity stack
  • Built-in breathers replace external OE breathers
  • Easy to install, usually in 90 minutes or less
Estimated Horsepower Gain3.33 HP @ 4710 RPM
Replacement FilterE-3987
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.469 in (63 mm)
CARB EO NumberD-269-60
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Overall Height3.25 in (83 mm)
Top MaterialBlack Powder Coated
Package Contents1 Air Filter
Weight5 lb (2.2 kg)
Product Box Height9.5 in (241 mm)
Product Box Length11.9 in (302 mm)
Product Box Width4.8 in (122 mm)
Mounting Hardware IncludedYes
No cross references found for this part

Warning: Cancer & Reproductive Harm – P65Warnings.ca.gov

K&N Products

Unmatched Performance

50 years of improving vehicle performance.

intake

Cold Air Intakes

Custom-engineered tubes deliver better airflow than you get with a stock intake. More air means better performance.

air filters

Air Filters

Using cotton gauze instead of typical folded paper, our filters increase airflow while providing excellent engine protection.

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Cabin Air Filters

Helps capture most mold, mildew, fungus, spores, bacteria, germs, pollen and allergens, and helps to rid the air of unpleasant odors.

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Oil Filters

K&N oil filters use a high flow filter media that allows for high flow rates while providing outstanding engine protection.

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Speed Shop

From custom air filters to fuel pumps and carb accessories, the K&N Speed Shop has been assembled to help your vehicle run at peak performance.

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Home Air Filters

New washable and reusable air conditioning and furnace filters for your home. From the industry leader in washable automotive filtration.

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FUEL FILTERS

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CLEANING KITS

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HD DIESEL

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POWERSPORTS

OUR STORY

WHY K&N?


K&N is the home of the original red oiled air filter. In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N), developed a ground-breaking new idea for an oiled air filter. Five decades later, K&N® is still innovating industry-leading filtration technology, and offers outstanding protection for everything from top-fuel dragsters to commuter vehicles across the globe. Thank you for helping us reach 50 years in business!


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