Coolant hose replacement C4 Cactus 2018 1.5 BlueHDI

[Patryktcv]

Hello,

I have a coolant leak as shown in picture behind the engine block, under air box on my Cactus C4. It has something to do with thermostat as it leak when heating is on.
I am not able to find a car part noir the correct name for the part to replace for my car. Would you be able to help identify the part nunber and advice on how to buy it? I never bought a part myself, but it seem to be an easy fix.

Thanks!

[PaulC5]

You will most likely need to get the part from a Citroen dealer. If you refill the coolant there is often a special procedure that needs to be followed so something to check on.

What is the green colour, is that the anti freeze that is leaking out ? When bought from a Citroen dealer it has usually been a blue colour and the original in our cars has been a slight yellow colour.