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K&N Intake System-Harley Davidson Harley Davidson -L --Cyl

$229.99

K&N

Model #RK-3946B

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K&N's Street Metal Series High-Flow Air Intake Systems provide attractive styling, offer increased airflow and deliver more horsepower & torque to your Harley-Davidson motorcycle. These air intake systems eliminate the stock OE air cleaner and replace it with a complete high-flow air intake system to increase power. The sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal-run breather system. The air intake system comes with a K&N Air Filter for high air flow and long service intervals. The K&N air filter is washable, reusable, pre-oiled and ready for installation. To help absorb vibration, a durable mounting gasket is also included. The all-black design of this air intake means it's certain to stand out, especially with that signature red K&N air filter.

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.

Features

  • Air Filter Color: Red
  • Air Filter Height: 2.25 in (57 mm)
  • Air Filter Material: Cotton Gauze
  • Air Filter Washable: Yes
  • CARB EO Number: D-269-59
  • Color / Finish: Red Filter, Black Top
  • Estimated Horsepower Gain: 7.56 HP @ 4009 RPM
  • Horse Power Increase: 8 HP
  • Mounting Hardware Included: Yes
  • Overall Height: 2.25 in (57 mm)
  • Package Material: Corrugated
  • Package Type: Box
  • Product Style: Motorcycle Intake System
  • Prop 65 (C, R or CR): CR
  • Prop 65 - Short Label: WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
  • Prop 65 Warning Label: https://www.knfilters.com/images/l/prop65.jpg
  • Prop 65 Yes/No: Yes
  • Replacement Filter: HD-0800
  • RPM: 4009
  • Street Legal In All US States: See Vehicle Applications
  • Title: K&N RK-3946B Intake System-Harley Davidson
  • Top Material: Black Powder Coated
  • TUV Approved (Europe): No
  • Warranty: 1,000,000 Miles/10 Year
  • Weight: 4 lb (1.8 kg)

Notes:

Proposition 65

/!\ warningWARNING: Cancer and Reproductive Harm

https://www.P65Warnings.ca.gov

Vehicle Engine Notes
2008-2016
Harley Davidson FLHR Road King

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2008-2013
Harley Davidson FLHRC Road King Classic

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2008
Harley Davidson FLHRSE4 Screamin Eagle Road King

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2008-2009
Harley Davidson FLHT Electra Glide Standard

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2008-2013
Harley Davidson FLHTC Electra Glide Classic

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2012, 2014-2015
Harley Davidson FLHTCU Electra Glide Ultra Classic

- Cylinder - Liter
  • California Air Resources Board Exempt: No; Motorcycle Intake System - Hammer - Black
2008-2011, 2013
Harley Davidson FLHTCU Electra Glide Ultra Classic

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2015
Harley Davidson FLHTCUL Electra Glide Ultra Classic Low

- Cylinder - Liter
  • California Air Resources Board Exempt: No; Motorcycle Intake System - Hammer - Black
2010
Harley Davidson FLHTCUSE5 CVO Ultra Classic Electra Glide

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2014-2015
Harley Davidson FLHTCUTG Tri Glide Ultra

- Cylinder - Liter
  • California Air Resources Board Exempt: No; Motorcycle Intake System - Hammer - Black
2009-2013
Harley Davidson FLHTCUTG Tri Glide Ultra Classic

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2011-2014
Harley Davidson FLHTK Electra Glide Ultra Limited

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2010
Harley Davidson FLHTK Electra Glide Ultra Limited

- Cylinder - Liter
  • California Air Resources Board Exempt: No; Motorcycle Intake System - Hammer - Black
2015-2016
Harley Davidson FLHTK Ultra Limited

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2015-2016
Harley Davidson FLHTKL Ultra Limited Low

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2008-2016
Harley Davidson FLHX Street Glide

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2014-2016
Harley Davidson FLHXS Street Glide Special

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2010-2011
Harley Davidson FLHXXX Street Glide Trike

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2015-2016
Harley Davidson FLRT Freewheeler

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2016-2017
Harley Davidson FLS Softail Slim

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2016-2017
Harley Davidson FLSS Softail Slim S

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2016-2017
Harley Davidson FLSTC Heritage Softail Classic

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2016-2017
Harley Davidson FLSTF Fat Boy

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2016
Harley Davidson FLSTFB Fat Boy Lo

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2016-2017
Harley Davidson FLSTFBS Fat Boy S

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2016-2017
Harley Davidson FLSTN Softail Deluxe

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2008-2009
Harley Davidson FLTR Road Glide

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2011-2013
Harley Davidson FLTRU Road Glide Ultra

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2015
Harley Davidson FLTRX Road Glide

- Cylinder - Liter
  • California Air Resources Board Exempt: No; Motorcycle Intake System - Hammer - Black
2010-2013
Harley Davidson FLTRX Road Glide Custom

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2015-2016
Harley Davidson FLTRXS Road Glide Special

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2017
Harley Davidson FXDWG Dyna Wide Glide

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black
2016-2017
Harley Davidson FXSB Breakout

- Cylinder - Liter
  • California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - Hammer - Black

Who is Behind K&N Intakes?

K&N, formally known as K&N Engineering, Inc., is the world’s leading manufacturer of washable performance air filters and cold air intake systems. K&N manufactures over 12,000 parts for a wide range of makes and models of motorcycles, cars, SUV, trucks, industrial applications, and more. K&N was founded in 1969 and is headquartered in Riverside, California in a complex of 10 buildings compromising approximately 400,000 square feet. K&N also operates facilities in China, England, and the Netherlands.

In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N) developed a revolutionary idea for an air filter—one that could perform under the demands of dusty, dirty off-road environments. After experimenting with different types of filter media, they discovered that an oiled cotton design allowed the filter to capture contaminants efficiently, and also be washed and reused. It was right then and there that the original K&N High-Flow Air Filter was born. Fifty years later, K&N is still dominating the industry with leading filtration technology and innovative products that offer extraordinary protection for virtually every application out there.

What Makes K&N the Best?

All K&N products undergo rigorous testing to make sure they adhere to and exceed demanding quality standards. These tests include power, torque, and airflow tests to confirm that the intake products are maximizing power boost while retaining engine safety. The company stands behind its product 100 percent with some of the most extensive warranties in the business – a Million Mile Limited warranty. K&N’s performance air intake systems are designed to improve airflow to the engine by replacing the restrictive factory system with a single aerodynamic tube and highly efficient filter media. The systems are available in two materials. The first is Polyethylene, which is used to produce 57 and 63 series intake systems. The second one is aluminum, which can be found on the 69 and 77 series intake systems.

Advantages of K&N Intakes

The benefits of adding a K&N intake system to your car are plenty. Firstly, it will increase your vehicle’s horsepower and torque, while also improving fuel economy and the appearance of your engine bay. What’s more, it will deliver a satisfying, more aggressive exhaust note at higher RPMs. Each K&N intake includes an oversized filtering unit, which can go up to 100,000 miles between cleanings, unlike paper filters that can become clogged easily and cannot be washed or reused. In other words, with K&N products, you will never have to replace your air filter again.

Why Install an Aftermarket Intake?

Internal combustion engines all work as large air pumps. Air goes in, fuel is added, combustion occurs, and air goes out. This means there are two ways of increasing power: getting more air into the engine or making it easier for air to get out of the engine. Your air intake is responsible for filtering air before it enters your engine. Dirty air can damage the engine cylinder walls, so a high-quality filter is a must-have item. With a K&N system or filter, you increase airflow through the filter, which means more air is pulled into the engine. K&N does this without reducing filtration qualities, so your engine will live a long life.

Purchase K&N Intakes at Vivid Racing

Vivid Racing carries an extensive inventory of K&N products ranging from air filters, oil filters, air injection systems, fuel filters and pumps, sensors, carburetors, cold air intakes, and much, much more! If you cannot find a particular item above, please call us at (480) 966-3040 and we will help you find it. We are also here to answer any product questions, regarding usage, benefits, and fitment. Don’t delay! Improve your vehicle’s performance today with K&N Intakes.   

K&N Oil Filters | K&N Replacement Filters | K&N 57 Series Intakes | K&N 69 Series Typhoon Intakes
K&N 77 Series Intakes

K&N 10-YEAR/ MILLION MILE LIMITED WARRANTY
This warranty covers defects in materials and workmanship of your K&N OE Replacement Air Filter and Intake System (the "Product"), with the exceptions stated below.
This warranty does not cover damage due to (a) transportation, (b) storage, (c) improper use, (d) failure to follow the Product instructions or to perform any preventive maintenance, (e) modifications, (f) unauthorized repair, (g) normal wear and tear, (h) any type of racing or competition, (i) any off-road use, or (j) external causes such as accidents, abuse, or other actions or events beyond our reasonable control (e.g., acts of God and natural disasters).
This warranty lasts for 10-Years or a Million Miles, whichever comes first, from the date the product was purchased. The warranty period will not be extended if we repair or replace the Product.
We will repair any Product that proves to be defective in materials or workmanship. If repair is not possible, we will either replace your Product with a new Product of similar composition and price, or refund the full purchase price of your Product, at our sole discretion. There is no charge for inspection.

K&N 3-YEAR/ 300,000 MILE LIMITED WARRANTY
This warranty covers defects in materials and workmanship of your K&N Commercial Grade Diesel Air Filter (the "Product"), with the exceptions stated below.
This warranty does not cover damage due to (a) transportation, (b) storage, (c) improper use, (d) failure to follow the Product instructions or to perform any preventive maintenance, (e) modifications, (f) unauthorized repair, (g) normal wear and tear, (h) any type of racing or competition, (i) any off-road use, or (j) external causes such as accidents, abuse, or other actions or events beyond our reasonable control (e.g., acts of God and natural disasters).
This warranty lasts for 3-Year or 300,000 miles, whichever comes first, from the date the product was purchased. Coverage applies only to the original purchaser of the Product and is non-transferable. The warranty period will not be extended if we repair or replace the Product.
We will repair any Product that proves to be defective in materials or workmanship. If repair is not possible, we will either replace your Product with a new Product of similar composition and price, or refund the full purchase price of your Product, at our sole discretion. There is no charge for inspection.

K&N ONE YEAR LIMITED WARRANTY
This warranty covers defects in materials and workmanship of your K&N Oil Filter, Automotive Accessory, Universal, Special or Disposable Filter, Exhaust Systems (the "Product"), with the exceptions stated below.
This warranty does not cover damage due to (a) transportation, (b) storage, (c) improper use, (d) failure to follow the Product instructions or to perform any preventive maintenance, (e) modifications, (f) unauthorized repair, (g) normal wear and tear, (h) any type of racing or competition, (i) any off-road use or (j) external causes such as accidents, abuse, or other actions or events beyond our reasonable control (e.g., acts of God and natural disasters).
This warranty lasts for One Year from the date of purchase. Coverage applies only to the original purchaser of the Product and is non-transferable. The warranty period will not be extended if we repair or replace the Product.
We will repair any Product that proves to be defective in materials or workmanship. If repair is not possible, we will either replace your Product with a new Product of similar composition and price, or refund the full purchase price of your Product, at our sole discretion. There is no charge for inspection.

Installation Instructions

Click to view the Installation Instructions here

Dyno Sheet

Click to Download here