Water leak

My 45 has a water leak. It is from a long metal pipe that goes from near the top right of the engine down the right side where it turns left and joins to a rubber hose that comes in from the left. The hose is secured by a jubilee clip. The leak is just below the bend on the metal pipe. there is evidence it has been brazed previously.



Can anyone identify the pipe?



I will upload a picture later.

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