ARLEN NESS Big Sucker with Cover - Black - Twin Cam 18-820

A properly engineered breather system is critical for engine reliability and performance, especially in forced induction or high-RPM applications where crankcase pressure can compromise seals and gaskets. The Arlen Ness Big Sucker eliminates the complexity and mess of traditional hose-and-filter setups while routing positive crankcase ventilation directly into the intake manifold for a clean, closed-loop design. With a 20% larger filter element and U.S.-manufactured construction, this bolt-on kit delivers dependable airflow management without the hassle of banjo fittings or external plumbing.

• One-piece aluminum backing plate
• Patented hidden breather technology
• Radius air inlet design
• Closed-loop breather system
• 20% larger filter element
• Steel protective outer cover
• No banjo fittings required
• No external hoses needed
• Pre-oiled filters included
• Complete hardware provided
• Bolt-on installation
• Twin Cam compatible
• Made in U.S.A.