Arlen Ness 18-446

Big Sucker™ air cleaners are engineered and proven to give your engine maximum airflow for more horsepower & torque. Specially designed for Sportster® Iron/48/72 factory 8" air cleaner covers, these kit utilize Stage 2 sized filters to pull in the most air possible when using the factory cover

• Designed to fit 8" Sportster® Iron/48/72 Factory Air Cleaner Covers
• Increases Horsepower & Torque 
• Patented Hidden Breather Technology 
• Pre-Oiled Red High Performance Filters
• One-Piece Aluminum Backing Plate 
• Radius Air Inlet for Unobstructed Airflow  

Air Cleaner Backing Plate:

• Made from aluminum and finished to spec by CNC machine 
• The backing plate's one-piece design features our patented hidden breather technology, each breather is o-ringed at the heads and exits at the mouth of the throttle body. This creates a virtually closed look system which eliminates the need for any external hoses or hardware
• Smooth radius air inlet engineered to provide maximum airflow directly into the engine 
• Available finishes: Standard Raw / Chrome / Black Powdercoat 

Performance Air Filter:

• Each Big Sucker performance filter is handmade in the USA 
• Red pre-oiled cotton performance filters are made from 4 layers of surgical grade cotton.  Filters are washable/re-useable, filter service kits are available separately
• Stage 2 sized filter offers the most airflow possible when using Sportster 8" factory air cleaner covers 

Air Cleaner Covers:

• Accepts 16-up Sportster Iron / 48 / 72 factory air cleaner covers 

16-up Sportster Iron / 48 / 72 Models w/ Factory Air Cleaner Covers 

FITMENT DISCLAIMER

Fitment information is provided as a general reference only and is not guaranteed for any motorcycle, whether stock or modified. Compatibility may vary by year, model, and individual configuration.

Customers are responsible for verifying fitment prior to purchase. House of Harley-Davidson assumes no liability for purchases made based on incorrect or unverified fitment information.

Please contact our Parts Department with any questions before ordering at 414-282-2211