Arlen Ness Big Sucker Smooth Stage 1 Air Filter - Chrome - Twin Cam

Big Sucker™ Stage 1 air cleaners are engineered and proven to give your engine maximum airflow for more horsepower & torque. The patented hidden breather backing plate is o-ringed at the heads and exits inside the mouth of the throttle body for a virtually closed loop system, eliminating the need for any external hoses or hardware.

• Features a one-piece aluminum backing plate/carb support bracket with patented hidden breather technology and radius air inlet
• Eliminates the need for banjo fittings, hoses and filter
• Breather passages exit at the mouth of the carburetor/throttle body, creating a virtually closed-loop system
• Kit includes high-performance filter, backing plate and steel outer cover
• Pre-oiled filters available in two styles: standard or stainless-steel jacketed
• All necessary hardware and instructions are included with each kit
• C.A.R.B. compliant reference E.O. #D-639-2 approved for many 97-09 EFI applications