For use with CCV6000 Series Closed Crankcase Ventilation Bypass Filter Assemblies. Fitting/Hose Kits come with both fittings and enough hose for inlet and outlet sides of the Racor CCV assembly. Racor CCV assemblies require fittings available only from Racor. In order to determine the correct application, you need to know the quantity and the outside diameter of engine breather(s)/hose connection. Fitting/Hose Kits are available in various sizes and configurations.