K&N · RK-3951
Part #: RK-3951
UPC: 024844364620
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Description: Intake System-Harley Davidson; K&N Street Metal performance air intake systems increase power by replacing the restrictive stock OE air cleaner with a K&N complete performance air intake system.
Description:
Description
K&N Street Metal Air Intake Systems for Harley Davidson motorcycles replace the restrictive stock OE air cleaner with an oversized K&N High-Flow Air Filter and a high-volume cast aluminum housing. If you're looking for an aggressive appearance but want a significant increase in airflow, resulting in more power, this high-flow air intake system is exactly what your Harley needs. Installation is so simple, it can usually be done in 90 minutes or less. The K&N air filter is washable, reusable, pre-oiled and ready for installation. This intake system features a matte black housing with silver details and sanded fins. Internal breathers provide a sleek, clean appearance. This air intake has a classic styling with a savage appeal.
Features & benefits
- Increased Horsepower: Guaranteed to increase horsepower, helping unlock greater performance from your engine.
- Enhanced Driving Experience: Improves throttle response and improved engine sound.
- Premium Construction: Built with premium intake materials and a durable, high-quality finish designed for lasting performance.
- Washable & Reusable Air Filter: Includes a High-Flow Air Filter that can go up to 100,000 miles before cleaning under normal highway driving conditions.
Information
Associated products: E-3987 Custom Air Filter, 99-5000 Filter Care Service Kit Aerosol
Application summary
| Year | Make / model |
|---|---|
| 2008-2016 | Harley-Davidson FLHR Road King |
| 2008-2013 | Harley-Davidson FLHRC Road King Classic |
| 2008 | Harley-Davidson FLHRSE4 Screamin Eagle Road King |
| 2008-2009 | Harley-Davidson FLHT Electra Glide Standard |
| 2008-2013 | Harley-Davidson FLHTC Electra Glide Classic |
| 2008-2013 | Harley-Davidson FLHTCU Electra Glide Ultra Classic |
| 2010 | Harley-Davidson FLHTCUSE5 CVO Ultra Classic Electra Glide |
| 2009-2013 | Harley-Davidson FLHTCUTG Tri Glide Ultra Classic |
| 2011-2014 | Harley-Davidson FLHTK Electra Glide Ultra Limited |
| 2015-2016 | Harley-Davidson FLHTK Ultra Limited |
| 2015-2016 | Harley-Davidson FLHTKL Ultra Limited Low |
| 2008-2016 | Harley-Davidson FLHX Street Glide |
| 2014-2016 | Harley-Davidson FLHXS Street Glide Special |
| 2010-2011 | Harley-Davidson FLHXXX Street Glide Trike |
| 2015-2016 | Harley-Davidson FLRT Freewheeler |
| 2016-2017 | Harley-Davidson FLS Softail Slim |
| 2016-2017 | Harley-Davidson FLSS Softail Slim S |
| 2016-2017 | Harley-Davidson FLSTC Heritage Softail Classic |
| 2016-2017 | Harley-Davidson FLSTF Fat Boy |
| 2016-2017 | Harley-Davidson FLSTFB Fat Boy Lo |
| 2016-2017 | Harley-Davidson FLSTFBS Fat Boy S |
| 2016-2017 | Harley-Davidson FLSTN Softail Deluxe |
| 2008-2010 | Harley-Davidson FLTR Road Glide |
| 2011-2013 | Harley-Davidson FLTRU Road Glide Ultra |
| 2015-2016 | Harley-Davidson FLTRX Road Glide |
| 2010-2013 | Harley-Davidson FLTRX Road Glide Custom |
| 2015-2016 | Harley-Davidson FLTRXS Road Glide Special |
| 2016-2017 | Harley-Davidson FXSB Breakout |
Specifications
- GTIN
- 10024844364620
- Weight
- 4.97 lb
- Height
- 4.88 in
- Length
- 11.75 in
- Width
- 9.5 in
- EO
- Legal US
- Life cycle
- Available to Order
- Alt. part number
- RK-3951
- AAM brand code
- KAN
- Warehouse brand code
- KAN
- AAIA brand code
- BBWQ
Attributes
- AAM Standard Pack
- 4
- Air Filter Color
- Red
- Air Filter Height
- 2.469 in (63 mm)
- Air Filter Included
- Yes
- Air Filter Material
- Cotton Gauze
- Air Filter Washable
- Yes
- Alternate Part Number
- RK-3951
- CARB EO Number
- D-269-59
- California Proposition 65
- WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
- California Restricted
- Not legal for sale or use in California
- Color / Finish
- Red Filter, Black Housing
- Estimated Horsepower Gain
- 6.04 HP @ 4907 RPM
- Horse Power Increase
- 6 HP
- Housing Material
- Aluminum
- Item Type
- High Performance
- Mounting Hardware Included
- Yes
- Overall Height
- 3.25 in (83 mm)
- Package Contents
- 1 Air Filter
- Package Material
- Paperboard
- Package Quantity
- 1
- Package Type
- Box
- Product Box Height
- 4.8 in (122 mm)
- Product Box Length
- 12 in (305 mm)
- Product Box Width
- 9.5 in (241 mm)
- Product Style
- Motorcycle Intake System
- RPM
- 4907
- Replacement Filter
- E-3987
- Retail Packaging
- Yes
- Street Legal In All US States
- Not legal for sale or use in California on any pollution controlled motor vehicle. NOTE: Some specific models and years may be legal in CA. Check the CARB status on your parts at knfilters.com.
- TUV Approved (Europe)
- No
- Title
- K&N RK-3951 Intake System-Harley Davidson
- Top Material
- Black Powder Coated
- Warranty
- No-Hassle Lifetime Limited
- Weight
- 5 lb (2.3 kg)
Fitment status
Select a vehicle or engine to see whether this part applies to your application.
Application summary
2008-2016 Harley-Davidson FLHR Road King; 2008-2013 Harley-Davidson FLHRC Road King Classic; 2008 Harley-Davidson FLHRSE4 Screamin Eagle Road King; 2008-2009 Harley-Davidson FLHT Electra Glide Standard; 2008-2013 Harley-Davidson FLHTC Electra Glide Classic; 2008-2013 Harley-Davidson FLHTCU Electra Glide Ultra Classic; 2010 Harley-Davidson FLHTCUSE5 CVO Ultra Classic Electra Glide; 2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic; 2011-2014 Harley-Davidson FLHTK Electra Glide Ultra Limited; 2015-2016 Harley-Davidson FLHTK Ultra Limited; 2015-2016 Harley-Davidson FLHTKL Ultra Limited Low; 2008-2016 Harley-Davidson FLHX Street Glide; 2014-2016 Harley-Davidson FLHXS Street Glide Special; 2010-2011 Harley-Davidson FLHXXX Street Glide Trike; 2015-2016 Harley-Davidson FLRT Freewheeler; 2016-2017 Harley-Davidson FLS Softail Slim; 2016-2017 Harley-Davidson FLSS Softail Slim S; 2016-2017 Harley-Davidson FLSTC Heritage Softail Classic; 2016-2017 Harley-Davidson FLSTF Fat Boy; 2016-2017 Harley-Davidson FLSTFB Fat Boy Lo; 2016-2017 Harley-Davidson FLSTFBS Fat Boy S; 2016-2017 Harley-Davidson FLSTN Softail Deluxe; 2008-2010 Harley-Davidson FLTR Road Glide; 2011-2013 Harley-Davidson FLTRU Road Glide Ultra; 2015-2016 Harley-Davidson FLTRX Road Glide; 2010-2013 Harley-Davidson FLTRX Road Glide Custom; 2015-2016 Harley-Davidson FLTRXS Road Glide Special; 2016-2017 Harley-Davidson FXSB Breakout
Installation
K&N RK-3951
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