ARLEN NESS 1010-2469 18-394 Big Sucker™ Stage 1 Air Filter Kit - Carbon - BlackFeatures Each breather is O ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary breather tubes Breathing system eliminates oil issues associated with the M8 engines by directing any excess breather oil back into the engine Kit includes one piece backing plate, breather tubes, performance filter, filter top, gaskets, oil reservoir and necessary hardware High performance filters are