Coolant leak

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2007 Mazda CX-9 Touring
I have a leak in the nipple that comes out of the radiator which is next to the drain plug. I squeeze the hose and nothing comes out,then i squeeze the plastic nipple same result. After a while it gets wet again with coolant. Is it the hose or the radiator. Also does anyone have a part number to that hose in case I have to replace it. And the other picture shows 2 hoses connected to a pipe fitting what is that for. This is a 2007 model.
 

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2010 CX-9 GT
Hose coming off radiator runs to the overflow tank I think. Part # is CY0115537B.

The fitting is a part of a coolant line that runs to the oil cooler.
 
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2007 Mazda CX-9 Touring
Thanks for the quick reply. I thought the same thing but this is a shorter hose which runs to something else. I will try to take a pic of where it goes to. Do you think it is the hose or the radiator nipple. Thanks again for the reply.
 
i just replaced that fitting, it is not a hard job, it is only one bolt to the top of the beam. Just use some vice grip on each side so you don't drop all the coolant. Part number CY0115520B.

part number 16
5423035.png
 
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