The hose is very important as it has a small take-off on it that provides the suction for the dizzy vent system. It is NLA, if yours is shot then get a hose of the right size with a 90 degree and and use one of these for the takeoff: https://www.viperperformance.co.uk/hose-plugs-blanking-caps_10103_self-seal-take-offfor-silicone-hoses.html