K&N
K&N RK-3951 Motorcycle Air Intake System for Select 2008-2017 Harley-Davidson Models
K&N RK-3951 Motorcycle Air Intake System for Select 2008-2017 Harley-Davidson Models
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K&N RK-3951 Motorcycle Air Intake System.
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.
Key Features
- Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection.
Fits These Vehicles
Fits 1 make, 2008-2017 — click to view all 37 models
- Fits 2016-2017 Harley-Davidson FLS Softail Slim 103 CI
- Fits 2016-2017 Harley-Davidson FLSS Softail Slim S 110 CI
- Fits 2016-2017 Harley-Davidson FLSTC Heritage Softail Classic 103 CI
- Fits 2016-2017 Harley-Davidson FLSTF Fat Boy 103 CI
- Fits 2016-2017 Harley-Davidson FLSTFB Softail Fat Boy Lo 103 CI
- Fits 2016-2017 Harley-Davidson FLSTFBS Fat Boy S 110 CI
- Fits 2016-2017 Harley-Davidson FLSTN Softail Deluxe 103 CI
- Fits 2016-2017 Harley-Davidson FXSB Breakout 103 CI
- Fits 2012-2016 Harley-Davidson FLHR Road King 103 CI
- Fits 2008-2011 Harley-Davidson FLHR Road King 96 CI
- Fits 2015-2016 Harley-Davidson FLHTK Ultra Limited 103 CI
- Fits 2015-2016 Harley-Davidson FLHTKL Ultra Limited Low 103 CI
- Fits 2012-2016 Harley-Davidson FLHX Street Glide 103 CI
- Fits 2008-2011 Harley-Davidson FLHX Street Glide 96 CI
- Fits 2014-2016 Harley-Davidson FLHXS Street Glide Special 103 CI
- Fits 2015-2016 Harley-Davidson FLRT Freewheeler 103 CI
- Fits 2015-2016 Harley-Davidson FLTRX Road Glide 103 CI
- Fits 2015-2016 Harley-Davidson FLTRXS Road Glide Special 103 CI
- Fits 2011-2014 Harley-Davidson FLHTK Electra Glide Ultra Limited 103 CI
- Fits 2012-2014 Harley-Davidson FLTRX Road Glide Custom 103 CI
- Fits 2010-2011 Harley-Davidson FLTRX Road Glide Custom 96 CI
- Fits 2011-2013 Harley-Davidson FLHRC Road King Classic 103 CI
- Fits 2008-2010 Harley-Davidson FLHRC Road King Classic 96 CI
- Fits 2012-2013 Harley-Davidson FLHTC Electra Glide Classic 103 CI
- Fits 2008-2011 Harley-Davidson FLHTC Electra Glide Classic 96 CI
- Fits 2013 Harley-Davidson FLHTCU Ultra Classic Electra Glide 103 CI
- Fits 2008-2011 Harley-Davidson FLHTCU Ultra Classic Electra Glide 96 CI
- Fits 2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic 103 CI
- Fits 2011-2013 Harley-Davidson FLTRU Road Glide Ultra 103 CI
- Fits 2009-2012 Harley-Davidson FLHP Road King Police 103 CI
- Fits 2012 Harley-Davidson FLHTCU Electra Glide Ultra Classic 103 CI
- Fits 2009-2012 Harley-Davidson FLHTP Electra Glide Police 103 CI
- Fits 2010-2011 Harley-Davidson FLHXXX Street Glide Trike 103 CI
- Fits 2008-2011 Harley-Davidson FLTR Road Glide 96 CI
- Fits 2008-2010 Harley-Davidson FLHT Electra Glide Standard 96 CI
- Fits 2010 Harley-Davidson FLHTCUSE5 CVO Ultra Classic Electra Glide 110 CI
- Fits 2008 Harley-Davidson FLHRSE4 Screamin Eagle Road King 110 CI
Confirm the model year, engine and the part number against your vehicle before ordering.
K&N warrants this product to be free from defects in materials and workmanship for the lifetime of the product. Coverage applies only to the original purchaser and is non-transferable. Coverage excludes damage from transportation, storage, improper use, failure to follow the product instructions or perform preventive maintenance, modifications, unauthorized repair, normal wear and tear, racing, competition or off-road use. Claims are handled directly by K&N customer service.
Specifications
- Brand: K&N
- Manufacturer Part Number: RK-3951
- Type: Cold Air Intake
- CARB E.O. Number: D-269-59
- Street Legal: Legal for use in all 50 states
- Manufacturer Warranty: Lifetime Limited (original purchaser)
- Condition: New
Images are for illustrative purposes. The product you receive may differ in finish or packaging from the photograph.
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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Manufacturer's Warranty — K&N
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Manufacturer's Warranty — K&N
K&N warrants its products against defects in materials and workmanship. Washable replacement air filters, washable cabin air filters, performance air intake systems and home HVAC filters carry a lifetime limited warranty; oil filters, disposable and universal air filters and automotive accessories are covered for one year from the date of purchase. Coverage applies to the original purchaser and excludes damage from improper use, failure to perform maintenance, modification, normal wear, racing, competition or off-road use. Claims are handled directly by K&N customer service.
Warranty terms are set by the manufacturer and may change. Full details and claims are handled directly by K&N. Contact us if you need help with a warranty claim.

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