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

$308.99
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SKU
RK-3948B
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Intake System-Harley Davidson
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.
  • 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
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 Vehicle Applications
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
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.

cabin air filter

Cabin Air Filters

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

oil filters

Oil Filters

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

tuning

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.

hvac

Home Air Filters

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

filter

FUEL FILTERS

cleaning

CLEANING KITS

diesel filter

HD DIESEL

powersports

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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