• K&N Intake System-Harley Davidson (RK-3947)
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K&N

K&N Intake System-Harley Davidson (RK-3947)

K&N Intake System-Harley Davidson (RK-3947)

RK-3947

£310.00 GBP
£310.00 GBP
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The K&N RK-3947 High-Flow Air Intake System increases engine intake airflow and delivers more horsepower & torque to many Harley-Davidson FLT and FLH model motorcycles. The intake system increases power by eliminating the stock OE air cleaner and replacing it with a complete High-Flow Air Intake System. The intake system comes with a K&N air filter for high air flow and long service intervals. The K&N high-flow air filter is washable, reusable, pre-oiled and ready for installation.
  • Guaranteed increase in horsepower
  • Replaces the stock air filter and cleaner backing plate assembly
  • Washable, oversized K&N high-flow air filter for long service interval
  • Oversized black, powder coated aluminum backing plate provides solid mounting
  • Dyno tuned velocity stack directs airflow to engine
  • Built in breathers replace external OE breathers
  • Includes K&N Million Mile Limited Warranty

Overview

The K&N RK-3947 High-Flow Air Intake System increases engine intake airflow and delivers more horsepower & torque to many Harley-Davidson FLT and FLH model motorcycles. The intake system increases power by eliminating the stock OE air cleaner and replacing it with a complete High-Flow Air Intake System. The intake system comes with a K&N air filter for high air flow and long service intervals. The K&N high-flow air filter is washable, reusable, pre-oiled and ready for installation.

Product Details


Guaranteed increase in horsepower*
Replaces the stock air filter and cleaner backing plate assembly*
Washable, oversized K&N high-flow air filter for long service interval*
Oversized black, powder coated aluminum backing plate provides solid mounting*
Dyno tuned velocity stack directs airflow to engine*
Built in breathers replace external OE breathers*
Includes K&N Million Mile Limited Warranty*
*

Specifications

  • Air Filter Color: Red
  • Air Filter Height: 2.125 in (54 mm)
  • Air Filter Included: Yes
  • Air Filter Material: Cotton Gauze
  • Air Filter Washable: Yes
  • CARB EO Number: D-269-59
  • Color / Finish: Red Filter
  • Chrome Top
  • Estimated Horsepower Gain: 7.43 HP @ 4786 RPM
  • Mounting Hardware Included: Yes
  • Overall Height: 2.125 in (54 mm)
  • Package Material: Paperboard
  • Package Quantity: 1
  • Package Type: Box
  • Product Box Height: 4.88 in (124 mm)
  • Product Box Length: 11.75 in (298 mm)
  • Product Box Width: 9.5 in (241 mm)
  • Product Style: Motorcycle Intake System
  • Product Weight: 4.30 lb (1.95 kg)
  • Replacement Filter: E-3975
  • Street Legal In All US States: See Vehicle Applications
  • Top Material: Chrome
  • TUV Approved (Europe): No
  • Warranty: No-Hassle Lifetime Limited
  • Weight: 4.3 lb (2 kg)

Cross Reference

  • Harley Davidson: 2925308B, Vance & Hines: 70041

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