Arlen Ness 18-318 Big Sucker™ Stage 1 Air Cleaner For Milwaukee-Eight®, Black

Description

The new Big Sucker™ Stage 1 performance intake for Milwaukee-Eight® (M8) engines adds new features to the original industry leading air cleaner. The new patent-pending hidden breather system is o-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary shooter tubes

Increases Horsepower & Torque
Eliminates Oil Blow-bye Issues Associated with M8 Engines
Black Pre-Oiled High Performance Filter
Patented backing plate technology (US Patent: US 10,851,741 B1)
One-Piece Aluminum Backing Plate
Aluminum Filter Top Plate Design Eliminates Internal Mounting Hardware

California Air Resource Board: Executive Order D-639-12_R-01

California Prop 65: Learn More

Aluminum Backing Plate:

Aluminum Construction
Patent-pending hidden breather backing plate technology is a step up from our original patented system. Each breather is o-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through specially formed breather tubes
Eliminates oil blow-bye issues associated with performance intakes on M8 engines
Patent-pending oil catch is integrated into the backing plate and stops any excess breather oil from reaching the air filter. Oil catch is serviceable, simply bolt-on and off when your ready to wash/service the air filter
Formed aluminum filter plate design with integrated mounting studs eliminates any internal mounting hardware
Radius air inlet engineered to provide maximum airflow
Outer filter lip covers the urethane on the base of the air filter for a clean look

Performance Air Filter:

Made from black pre-oiled cotton
Engineered for optimum air flow and filtration. Perimeter flow design brings in air from all sides of the filter while filtering out all harmful debris
Washable and re-useable, filter service kits are available

Air Cleaner Cover Options:

Choose a Arlen Ness® Stage 1 custom cover for an exposed performance look
18-up Softail (FLDE/FLSL/FXLR) single-bolt factory air cleaner covers

Fitment

17-2023 M8 MODELS (EXCEPT: 2023 FLHXSE & FLTRXSE)

2017-up FLT Touring / Bagger Models: FLHT / FLHR / FLHX / FLTRX / FLTRU / H-D FL Trike
2018-up Softail™ Models

Kit Components (BOM)

Backing Plate Assembly: 18-393C Chrome / 18-394B Black

Aluminum Backing Plate, Black
Aluminum Filter Top Plate
Filter Top Plate Hardware, Stainless Socket Heads ¼ - 20 x 1-1/2” (2)

Patented Breather Vent System Components: Shooter Tubes & Oil Catch

Oil Catch: 18-392-3
Oil Catch Gasket: 18-392-4
Oil Catch Hardware, Stainless Socket Heads 8-32 x ¾: H-619S (2)
Shooter / Breather Tube Kit: BT-001

Stage 1 Hardware Kit, M8: HK-18458

Breather Bolts, Chrome: 18-457-4C (2)
Throttle Body Gasket: 18-457-3
Breather Bolt O-Rings: H-024-4 (4)

Logo Plate / Throttle Body Badge Assembly

Throttle Body Logo Badge: 18-203-8
Throttle Body Badge, Black Button Heads M6 x 1.0: HM-122B (2)

Additional Components:

Outer Cover Hardware, Chrome Flat Head 5/16-18 x 5/8: H-525C
Instruction Sheet: 18392-I