[Tf175]

Those are push connect fittings and should be replaced.  They don't appear to be DOT type , which is a better part . You might look at going with compression fittings , preferred by many here on the forum . Sizing and hose type should be shown on the hoses themselves. 
McMaster Carr or truck parts house for sourcing .
Someone familiar with your vintage can probably shed more light on what you need . PTFE paste on the threads , keep out of insides of course .
Chris