ARLEN NESS Deep-Cut Monster Air Cleaner - Chrome 81-019

If you're running a carbureted Harley, intake restriction is costing you horsepower and throttle response. The Arlen Ness Monster Air Cleaner eliminates that bottleneck with a larger filter element and strategically positioned breather technology that feeds your engine cleaner, denser air. The result is measurable performance gains without sacrificing reliability or requiring external plumbing.

This is a bolt-on upgrade that replaces your stock air cleaner assembly. The patented "hidden breather" design uses O-rings at the cylinder head and routes air directly through the throttle body, so you get efficient breathing without visible hoses or brackets cluttering your engine bay. The inverted filter top pulls air from all directions—sides and front—maximizing surface area and flow. Since the synthetic filter media is water-resistant and reusable, you'll save money on replacement filters over the life of the part.

• Fitment: Harley-Davidson carbureted models (year/model specific)
• Design: Patented hidden breather technology
• Filter Material: Water-resistant synthetic
• Maintenance: Reusable, rinse clean
• Cover: Forged billet aluminum
• Installation: Bolt-on, no fabrication
• MPN: 81-019
• Finish: Chrome plated