Mercedes 300D 1983 Euro Non Turbo
 

Hey so my 300d is a euro and is leaking coolant from the water pump housing to the hard line on the passenger side. I have been trying to find a hose for it but don't know what it is called. It seems to have a 90 degree angle to it coming from the water pump to the fire wall where it connects to the hard line and the hard line is met with another hose. I am guessing it is something like heater core left to feed pipe but I cant seem to find a number of it. Any help?