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K&N RK-3946B Intake System-Harley Davidson

Custom Assemblies > Intake System-Harley Davidson
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Easy to install
  • Made in USA
  • Backed by K&N warranty
K&N’s Street Metal Series High-Flow Air Intake Systems provide a good looking appearance, offer increased airflow and deliver more horsepower & torque to your Harley-Davidson motorcycle. These intake systems increase power by eliminating the stock OE air cleaner and replacing it with a complete high-flow air intake system. The sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal-run breather system. The intake system comes with a K&N Air Filter for high air flow and long service intervals. A durable mounting gasket is also included to help absorb vibration. The K&N high-flow air filter is washable, reusable, pre-oiled and ready for installation. Simple designed custom covers give this air intake good looks while powering down the highway or at your local show.

[RK Series Street Metal High Flow Air Intakes for Harley-Davidson Motorcycles]

Product Specifications

Estimated Horsepower Gain7.56 HP @ 4009 RPM
Air Filter ColorRed
Air Filter Height2.25 in (57 mm)
Air Filter MaterialCotton Gauze
California RestrictedNot legal for sale or use in California
Mounting Hardware IncludedYes
Overall Height2.25 in (57 mm)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Product StyleMotorcycle Intake System
Replacement FilterHD-0800
Street Legal In All US States No
Top Material/FinishBlack Powder Coated
TUV Approved (Europe)No
Weight4 lb (1.8 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N RK-3946B Intake System-Harley Davidson Product Reviews