---
product_id: 40636895
title: "K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Acceleration: Compatible with 2001-2017 Harley Davidson: (See Product Description for Selected Models) RK-3950"
brand: "k&n"
price: "€ 596.86"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.nl/products/40636895-k-and-n-cold-air-intake-system-high-flow-air
store_origin: NL
region: Netherlands
---

# Guaranteed horsepower & torque boost Easy 60-min installation Proudly made in the USA K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Acceleration: Compatible with 2001-2017 Harley Davidson: (See Product Description for Selected Models) RK-3950

**Brand:** k&n
**Price:** € 596.86
**Availability:** ✅ In Stock

## Summary

> 🏍️ Feel the power. Hear the growl. Own the road.

## Quick Answers

- **What is this?** K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Acceleration: Compatible with 2001-2017 Harley Davidson: (See Product Description for Selected Models) RK-3950 by k&n
- **How much does it cost?** € 596.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/40636895-k-and-n-cold-air-intake-system-high-flow-air)

## Best For

- k&n enthusiasts

## Why This Product

- Trusted k&n brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Breathe & Roar:** High-flow, reusable cotton air filter and custom heat shield amplify airflow and engine growl for that unmistakable aggressive sound.
- • **Tow Like a Pro:** Enhanced throttle response and uphill acceleration make towing effortless, perfect for daily rides and long highway hauls.
- • **Unleash Raw Power:** Dyno-tested to deliver a guaranteed increase in horsepower and torque, transforming your Harley’s performance instantly.
- • **Lifetime Confidence:** No-hassle lifetime limited warranty backed by a trusted brand that won’t void your factory vehicle warranty.
- • **Plug & Play Upgrade:** Vehicle-specific fit with all parts and instructions included for a straightforward install in under an hour.

## Overview

The K&N Cold Air Intake System RK-3950 is a precision-engineered, dyno-tested upgrade designed specifically for 2001-2017 Harley Davidson models. Featuring a high-flow washable cotton air filter and custom heat shield, it guarantees increased horsepower and torque while enhancing engine sound. Easy to install in about 60 minutes, it improves throttle response and towing performance without voiding your factory warranty. Proudly made in the USA and backed by a lifetime limited warranty, this intake system is the ultimate performance boost for serious Harley riders.

## Description

K&N is the inventor of the Air Intake System and has over 50 years of experience in the performance filtration industry. Proudly designed and manufactured in the USA, this premium cold air intake system is specifically designed for your vehicle and is dyno tested to provide a guaranteed increase in horsepower. It features a high flow intake tube, custom heat shield, and oversized K&N Washable High-Flow Cotton Air Filter for ultimate airflow. This Intake system replaces the restrictive OEM air box to provide an improved driving experience for daily driving or towing. It installs easily in about 60 minutes and is backed by a No-Hassle Lifetime Limited Warranty and will not void your factory warranty.Compatible Vehicles:2013-2016 HARLEY DAVIDSON FLD Switchback2007-2007 HARLEY DAVIDSON FLHR Road King2007-2007 HARLEY DAVIDSON FLHRC Road King Classic2002-2006 HARLEY DAVIDSON FLHRCI Road King Classic F/I2003-2006 HARLEY DAVIDSON FLHRI Road King F/I2007-2007 HARLEY DAVIDSON FLHRS Road King Custom2004-2006 HARLEY DAVIDSON FLHRSI Road King Custom F/I2007-2007 HARLEY DAVIDSON FLHT Electra Glide Standard2007-2007 HARLEY DAVIDSON FLHTC Electra Glide Classic2002-2006 HARLEY DAVIDSON FLHTCI Electra Glide Classic F/I2007-2007 HARLEY DAVIDSON FLHTCU Ultra Classic Electra Glide2002-2006 HARLEY DAVIDSON FLHTCUI Electra Glide Ultra Classic F/I2003-2006 HARLEY DAVIDSON FLHTI Electra Glide Standard F/I2007-2007 HARLEY DAVIDSON FLHX Street Glide2006-2006 HARLEY DAVIDSON FLHXI Street Glide F/I2012-2015 HARLEY DAVIDSON FLS Softail Slim2007-2015 HARLEY DAVIDSON FLSTC Heritage Softail Classic2002-2006 HARLEY DAVIDSON FLSTCI Heritage Softail Classic F/I2007-2015 HARLEY DAVIDSON FLSTF Fat Boy2010-2015 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo2001-2006 HARLEY DAVIDSON FLSTFI Fat Boy F/I2006-2006 HARLEY DAVIDSON FLSTI Heritage Softail F/I2007-2015 HARLEY DAVIDSON FLSTN Softail Deluxe2005-2006 HARLEY DAVIDSON FLSTNI Softail Deluxe F/I2008-2011 HARLEY DAVIDSON FLSTSB Softail Cross Bones2007-2007 HARLEY DAVIDSON FLSTSC Softail Springer Classic2005-2006 HARLEY DAVIDSON FLSTSCI Softail Springer Classic F/I2001-2003 HARLEY DAVIDSON FLSTSI Heritage Springer F/I2007-2007 HARLEY DAVIDSON FLTR Road Glide2002-2006 HARLEY DAVIDSON FLTRI Road Glide F/I2008-2009 HARLEY DAVIDSON FXCW Rocker2008-2011 HARLEY DAVIDSON FXCWC Rocker C

## Features

- GUARANTEED INCREASE IN HORSEPOWER & TORQUE: K&N cold air intake systems provide a less restrictive path for airflow, increasing the volume of cool, oxygen-rich air into your engine.
- DYNO TESTING YOU CAN TRUST: K&N air intake horsepower/torque testing is performed on wheel-based dynamometers and the reports are included with each intake system.
- IMPROVED ENGINE SOUND - HEAR THE GROWL: K&N’s intake systems allow your engine to breathe and sound as it should- your engine will growl on acceleration and return to quiet once at speed.
- BETTER TOWING: K&N Air intake kit improves acceleration and uphill performance when towing by improving throttle response, overall horsepower and torque. Excellent for daily and highway driving.
- PREMIUM ENGINE PROTECTION FROM A TRUSTED BRAND: K&N air intake will not void manufacturer vehicle warranty & No-Hassle Lifetime Limited Warranty protects for the life of your vehicle.
- HIGH-FLOW REUSABLE AIR FILTER: 4 layers of pleated, breathable cotton with K&N’s red filter oil to absorb dirt & dust particles, allowing clean air to continue flowing into your engine, only needs cleaning every 100k miles under normal highway conditions.
- EASY TO INSTALL: Includes detailed, step-by-step instructions & all necessary parts- the entire air intake system can typically be installed in less than 60 minutes with basic hand tools.
- MADE IN THE USA: Proudly made in the USA for trusted quality & reliability and backed by US based customer support.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | K&N |
| OEM Part Number | RK-3950 |
| Global Trade Identification Number | 00024844364647 |
| Manufacturer | K&N Engineering |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 024844364647 |
| Model | RK-3950 |
| Item Weight | 4.7 pounds |
| Item model number | RK-3950 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | RK-3950 |

## Product Details

- **Product Grade:** Performance Part
- **Brand:** K&N
- **Fit Type:** Vehicle Specific Fit
- **OEM Part Number:** RK-3950
- **Global Trade Identification Number:** 00024844364647

## Images

![K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Acceleration: Compatible with 2001-2017 Harley Davidson: (See Product Description for Selected Models) RK-3950 - Image 1](https://m.media-amazon.com/images/I/61gZ-2I5IPL.jpg)

## Questions & Answers

**Q: If I get this item Do I need fp3?**
A: If you have a good free flow exhaust and this k&n setup I recommend having one so you don't risk leaning out your bike. Otherwise if all you do is change the filter and housing then, no.

**Q: Does this affect riding leg position?**
A: Yes and no. My leg rests up against it while I ride vs the stock one. But you don’t even notice it. That’s on a 05 Electra glide.

**Q: Is there a rain sock for it?**
A: No K&N does not make a rain sock for this intake.

**Q: will this fit 05 electra glide?**
A: Yes for sure it will

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality
*by T***D on March 31, 2025*

Fit on my 2011 Harley Softail Blackline, bolted right up with no problems and was an easy upgrade from stock.

### ⭐⭐⭐⭐⭐ Perfect fitment better throttle response
*by D***R on April 21, 2024*

Looks fantastic! Ordered this to replace a screamin eagle intake. At 5'8" the stock "football" cover really got in the way of my knee with forward controls, the k&n is still a little in the way but not nearly as bad. I immediately noticed a snappier throttle response and the ol butt dyno says it's got a little more power.Fitment on my 09 fxdb was flawless and installation was a breeze. The included instructions even have color photos, took 20-30 minutes to install with absolutely zero issues.

### ⭐⭐⭐⭐⭐ Perfect
*by T***E on October 23, 2024*

Husband loved this. Easy to put on. Expensive but worth it.

## Frequently Bought Together

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-28*