---
product_id: 43301189
title: "K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Acceleration: Compatible with 2008-2017 Harley Davidson: (See Product Descriptionf for Selected Models) RK-3951"
brand: "k&n"
price: "72939 kr"
currency: ISK
in_stock: true
reviews_count: 8
url: https://www.desertcart.is/products/43301189-k-and-n-cold-air-intake-system-high-flow-air
store_origin: IS
region: Iceland
---

# Guaranteed horsepower & torque boost Wheel-based dyno tested performance Under 60 min easy install K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Acceleration: Compatible with 2008-2017 Harley Davidson: (See Product Descriptionf for Selected Models) RK-3951

**Brand:** k&n
**Price:** 72939 kr
**Availability:** ✅ In Stock

## Summary

> 🏍️ Ride louder, faster, and smarter with K&N’s cold air intake system!

## Quick Answers

- **What is this?** K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Acceleration: Compatible with 2008-2017 Harley Davidson: (See Product Descriptionf for Selected Models) RK-3951 by k&n
- **How much does it cost?** 72939 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/43301189-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

- • **Built to Last:** Enjoy a reusable high-flow filter with 100k mile cleaning intervals and backed by a lifetime warranty.
- • **Command Attention:** Amplify your engine’s growl on acceleration for that unmistakable street presence.
- • **Unleash Raw Power:** Experience a guaranteed increase in horsepower and torque with a less restrictive airflow path.
- • **Effortless Upgrade:** Install your new intake in under an hour with clear instructions and all parts included.
- • **Proven Performance:** Trust in dyno-tested results included with every system for verified gains.

## Overview

The K&N Cold Air Intake System RK-3951 is a vehicle-specific upgrade for 2008-2017 Harley Davidson models that boosts horsepower and torque by optimizing airflow. Dyno-tested for verified performance gains, it enhances throttle response and engine sound while featuring a durable, reusable high-flow filter. Easy to install in under 60 minutes, it comes with a lifetime warranty and is proudly made in the USA.

## 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:2009-2012 HARLEY DAVIDSON FLHP Road King Police2008-2016 HARLEY DAVIDSON FLHR Road King2008-2013 HARLEY DAVIDSON FLHRC Road King Classic2008-2008 HARLEY DAVIDSON FLHRSE4 Screamin Eagle Road King2008-2010 HARLEY DAVIDSON FLHT Electra Glide Standard2008-2013 HARLEY DAVIDSON FLHTC Electra Glide Classic2012-2012 HARLEY DAVIDSON FLHTCU Electra Glide Ultra Classic2008-2013 HARLEY DAVIDSON FLHTCU Ultra Classic Electra Glide2010-2010 HARLEY DAVIDSON FLHTCUSE5 CVO Ultra Classic Electra Glide2009-2013 HARLEY DAVIDSON FLHTCUTG Tri Glide Ultra Classic2011-2014 HARLEY DAVIDSON FLHTK Electra Glide Ultra Limited2015-2016 HARLEY DAVIDSON FLHTK Ultra Limited2015-2016 HARLEY DAVIDSON FLHTKL Ultra Limited Low2009-2012 HARLEY DAVIDSON FLHTP Electra Glide Police2008-2016 HARLEY DAVIDSON FLHX Street Glide2014-2016 HARLEY DAVIDSON FLHXS Street Glide Special2010-2011 HARLEY DAVIDSON FLHXXX Street Glide Trike2015-2016 HARLEY DAVIDSON FLRT Freewheeler2016-2017 HARLEY DAVIDSON FLS Softail Slim2016-2017 HARLEY DAVIDSON FLSS Softail Slim S2016-2017 HARLEY DAVIDSON FLSTC Heritage Softail Classic2016-2017 HARLEY DAVIDSON FLSTF Fat Boy2016-2017 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo2016-2017 HARLEY DAVIDSON FLSTFBS Fat Boy S2016-2017 HARLEY DAVIDSON FLSTN Softail Deluxe2008-2011 HARLEY DAVIDSON FLTR Road Glide2011-2013 HARLEY DAVIDSON FLTRU Road Glide Ultra2015-2016 HARLEY DAVIDSON FLTRX Road Glide2010-2014 HARLEY DAVIDSON FLTRX Road Glide Custom2015-2016 HARLEY DAVIDSON FLTRXS Road Glide Special2016-2017 HARLEY DAVIDSON FXSB Breakout-

## 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 ACCELERATION: K&N Air intake kit improves acceleration and uphill performance 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-3951 |
| Global Trade Identification Number | 00024844364623 |
| Manufacturer | K&N Engineering |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 024844364623 |
| Model | RK-3951 |
| Item Weight | 4.72 pounds |
| Item model number | RK-3951 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | RK-3951 |

## Product Details

- **Product Grade:** Performance Part
- **Brand:** K&N
- **Fit Type:** Vehicle Specific Fit
- **OEM Part Number:** RK-3951
- **Global Trade Identification Number:** 00024844364623

## Images

![K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Acceleration: Compatible with 2008-2017 Harley Davidson: (See Product Descriptionf for Selected Models) RK-3951 - Image 1](https://m.media-amazon.com/images/I/519YhIyVlOL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works for me
*by A***S on April 8, 2024*

Easy swap out performs great looks good excellent finish to my stage 1 on my 08 Electra Glide ultra classic it does stick out a bit further than the factory one does I'm 6 foot so it doesn't bother me but someone with shorter legs might not like it

### ⭐⭐⭐⭐⭐ Looks great
*by T***E on July 31, 2024*

It was easy to install works great !

### ⭐⭐⭐⭐⭐ Awesome look.
*by T***! on May 11, 2025*

What can I say? This is a K&N product It works perfectly and looks great thank you.

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**Shop now:** [https://www.desertcart.is/products/43301189-k-and-n-cold-air-intake-system-high-flow-air](https://www.desertcart.is/products/43301189-k-and-n-cold-air-intake-system-high-flow-air)

---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-19*