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K&N 01-17 Harley Davidson Softail / Dyna FI Performance Air Intake System

*Photo may not represent actual product

This K&N kit replaces the factory air box with a cast-aluminum intake tube and a washable cotton high-flow filter, built for the Softail and Dyna families. The manufacturer's design removes the restrictive stock air cleaner so air reaches the throttle body more directly, and it describes the system as guaranteed to increase horsepower. Owners searching for a reusable Harley Dyna intake or a 2001-2017 Softail cold air intake upgrade should note that the filter is cleanable rather than disposable, which means no recurring cost for paper elements.

Built-in breathers take the place of the external OE breathers, and the internal velocity stack is meant to improve throttle response and engine sound. The manufacturer rates the filter for up to 100,000 miles before service, depending on riding conditions. Exact model-year coverage should be confirmed against the manufacturer's fitment guide before ordering, since fitment varies across the Softail and Dyna lineup.

Installation is designed to take roughly 60 to 90 minutes with basic hand tools. Plan to remove the stock air cleaner assembly first, then mount the new tube and hardware. Ask the manufacturer or a qualified tuner whether your fuel-injection calibration should be adjusted after the install.

  • Fitment: Harley-Davidson Softail and Dyna models, 2001-2017 (confirm model and year with the manufacturer)
  • Intake tube: Cast aluminum, black finish
  • Air filter: Washable, reusable K&N High-Flow cotton element
  • Breathers: Built-in, replacing external OE breathers
  • Service interval: Up to 100,000 miles, depending on driving conditions
  • Install time: Approximately 60-90 minutes

FAQ:

Does this kit replace the stock air cleaner and breathers?

The manufacturer describes the system as eliminating the restrictive OE air cleaner in favor of a K&N high-flow filter, and the built-in breathers take the place of the external OE breathers.

How often does the air filter need service?

Per the manufacturer, the filter is washable and reusable and can last up to 100,000 miles before service, depending on driving conditions.

Does the kit include mounting hardware?

The manufacturer states that the kit includes all of the necessary mounting hardware for installation.

Installing it yourself

The manufacturer's install guidance for its AirCharger line lists a typical job time of about 60 to 90 minutes, with a wrench, extension, flat-blade screwdriver, and Allen wrench as the tools needed. Remove the stock air cleaner and breather hardware, transfer the mounting plate and hardware, then set the intake tube and filter in place. Confirm that the throttle-body plate and hardware match your model before you start, and check the manufacturer's instruction sheet for torque and routing details.

  • MPN: 57-1137
  • Manufactured by: K&N Engineering
  • Units per SKU: 1
  • In Stock: 8, On Order: 2
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MPN
57-1137
Manufacturer
K&N Engineering
Availability
In Stock (8)
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Order before 5pm PST and this product ships same day
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