Each Breather is O-Ringed at the heads, passes through the backing and exits inside the mouth of the Throttle Body Through proprietary breath tubes, Breathing System eliminates Oil Issues Associated with the m8 engines by Direing Any One-Piece Backing Plate, Breather Tubes, Performance Filter, Filter Top, Gaskets, Oil Reservoir and Necessary Hardware, High Performance Filhers are Made from Black Pre-Oiled Cott for the Best In AirFlow and Filter, Los filtros de rendimiento de la técnica de respaldo de respiración oculta están hechos de algodón negro pre-engrasado para el mejor flujo de aire y filtro, entrada de aire de radio suave para el flujo de aire sin casos