Arlen Ness, Stage 1 Big Sucker air cleaner kit. OEM cover

Black anodized one-piece aluminum backing plate. Used with OEM air cleaner cover with single central bolt or custom cover with central bolt with minimum ID 6-1/4″ (159mm). The Big SuckerT Stage I performance intake adds horsepower and torque. The 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.- Without cover – Takes all Arlen Ness Stage 1 air cleaner covers – Takes a custom round air cleaner cover with central mount hole; minimum ID 6-1/4″ (159mm) – Increases horsepower and torque – With black pre-oiled air cleaner element – Aluminum filter top plate design eliminates internal mounting hardware.