K&N Street Metal Air Cleaner Assembly (MPN: RK-3951S)

Enhance airflow and performance with a sleek design for Harley Davidson motorcycles.

The K&N Street Metal Air Cleaner Assembly is engineered to replace the restrictive stock air cleaner on Harley Davidson motorcycles, providing a significant increase in airflow and performance. This assembly features a high-volume cast aluminum housing that is powder coated in silver, ensuring durability and a striking appearance. The included K&N High-Flow Air Filter is washable, reusable, and pre-oiled, allowing for easy maintenance and long-lasting performance.

Designed with internal breathers, this air cleaner assembly maintains a clean and streamlined look while enhancing throttle response and engine sound. The integrated internal velocity stack optimizes airflow, contributing to improved horsepower. Installation is straightforward, typically taking 90 minutes or less, making it accessible for motorcycle enthusiasts looking to enhance their ride.

With its combination of classic styling and modern performance features, the K&N Street Metal Air Cleaner Assembly is a practical upgrade for those seeking to maximize their Harley Davidson's capabilities. The assembly not only improves engine efficiency but also adds an aggressive aesthetic to the motorcycle.

Features

• Designed To Improve Throttle Response And Engine Sound
• Cast Aluminum High-Volume, Performance Air Intake Housing In Silver
• Washable And Reusable K&N High-Flow Cotton Air Filter That Provides Outstanding Performance And Protection
• Integrated Internal Velocity Stack
• Built-In Breathers Replace External OE Breathers
• Guaranteed To Increase Horsepower
• Easy To Install, Usually In 90 Minutes Or Less

Specifications

• Manufacturer: K & N Filters
• Manufacturer Part Number: RK-3951S
• Height (IN): 3-1/4 Inch
• Top Design: K&N Logo
• Finish: Powder Coated
• Color: Silver
• Material: Aluminum
• Air Filter Height (IN): 2.469 Inch
• Air Filter Color: Red
• Air Filter Material: Cotton Gauze
• Estimated Install Time (Hours): 0.5

Compatibility / Fit

• 2008-2019 Harley Davidson FLHR Road King
• 2008-2013 Harley Davidson FLHRC Road King Classic
• 2008-2008 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
• 2010-2010 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
• 2015-2019 Harley Davidson FLHTK Ultra Limited
• 2015-2019 Harley Davidson FLHTKL Ultra Limited Low
• 2008-2019 Harley Davidson FLHX Street Glide
• 2014-2019 Harley Davidson FLHXS Street Glide Special
• 2010-2011 Harley Davidson FLHXXX Street Glide Trike
• 2015-2019 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
• 2016-2016 Harley Davidson FLSTFB Fat Boy Lo
• 2016-2017 Harley Davidson FLSTFBS Fat Boy S
• 2016-2017 Harley Davidson FLSTN Softail Deluxe
• 2008-2009 Harley Davidson FLTR Road Glide
• 2011-2013 Harley Davidson FLTRU Road Glide Ultra
• 2015-2019 Harley Davidson FLTRX Road Glide
• 2010-2013 Harley Davidson FLTRX Road Glide Custom
• 2015-2019 Harley Davidson FLTRXS Road Glide Special
• 2017-2017 Harley Davidson FXDWG Dyna Wide Glide
• 2016-2017 Harley Davidson FXSB Breakout

Technical Documents

• RK-3951S_inst.pdf
• RK-3951_dyno.pdf