Arlen Ness Big Sucker Stage I Air Filter Kit with Cover and Synthetic Filter - Beveled - Black - 50-840

One-piece aluminum backing plate features patented hidden breather technology
Each hidden breather is o-ringed at the heads and exits at the mouth of the injector/ crab to provide efficient engine breathing, eliminating the need for any external hoses or hardware
Radius air inlet provides maximum performance by providing unobstructed airflow
Backing plates are available in Standard, black powder coat, or chrome finish
Kits are available with standard red or synthetic black filter elements
Synthetic filters feature a black synthetic material that is water resistant and never needs to be oiled; just wash and re-use
All kits include high-performance filter, backing plate and steel outer cover
All necessary hardware and instructions are included with each kit
NOTE: Kits with Synthetic filter are exempt per C.A.R.B. ref. E.O. # D-639-4, Exhibit A