Does anybody know the size of this short section of hose that goes from the water valve to the U shaped metal pipe on 3VZE with rear heat? I thought the valve was 5/8 but the metal U measures closer to 3/4. I figure it's got to be 5/8 and just stretch it over the metal pipe. Pretty sure that's what I used on the heater core side. Thanks.

Hose photo

 

I am not sure what the size is for that hose, but the actual hose size will be a metric measurement, and will probably be a different size than the standard "American" hose sizes.