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RK-3948B
$308.99 USD
MSRP $539.99 42.8% Off
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K&N RK-3948B Intake System-Harley Davidson

Custom Assemblies > Intake System-Harley Davidson
  • Designed for Harley-Davidson motorcycles
  • Black Cover Plate with Chrome Accents
  • Increase horsepower and torque
  • Easy to install
  • Made in USA
  • Backed by K&N warranty
  • Washable and reusable
The K&N RK-3948B Intake System-Harley Davidson fits some Harley Davidson FLDE Deluxe, Harley Davidson FLFB Fat Boy, Harley Davidson FLFBS Fat Boy, Harley Davidson FLHC Heritage Classic, Harley Davidson FLHCS Heritage Classic, Harley Davidson FLHR Road King, Harley Davidson FLHRXS Road King Special, Harley Davidson FLHTCU Electra Glide Ultra Classic, Harley Davidson FLHTCUTG Tri Glide Ultra, Harley Davidson FLHTK Ultra Limited, Harley Davidson FLHTKL Ultra Limited Low, Harley Davidson FLHX Street Glide, Harley Davidson FLHXS Street Glide Special, Harley Davidson FLRT Freewheeler, Harley Davidson FLSB Sport Glide, Harley Davidson FLSL Softail Slim, Harley Davidson FLTRU Road Glide Ultra, Harley Davidson FLTRX Road Glide, Harley Davidson FLTRXS Road Glide Special, Harley Davidson FXBB Street Bob, Harley Davidson FXBR Breakout, Harley Davidson FXBRS Breakout, Harley Davidson FXFB Fat Bob, Harley Davidson FXFBS Fat Bob, Harley Davidson FXLR Low Rider, and Harley Davidson FXLR Low Rider Custom models. See vehicle applications link for details.
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. At the heart of this system is K&N's Air Filter which offers increased air flow, long service intervals, and is pre-oiled ready to be installed. The black custom cover plate with chrome accents gives 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 Gain6.84 HP @ 4812 RPM
Replacement FilterE-3982
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.188 in (56 mm)
CARB EO NumberD-269-60
Street Legal In All US StatesSee Application Link Above
TUV Approved (Europe)No
Overall Height2.281 in (58 mm)
Top MaterialAluminum
Weight5.4 lb (2.5 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Mounting Hardware IncludedYes
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N RK-3948B Intake System-Harley Davidson Product Reviews