Coolant lek hose.

[goral]

I have a coolant leak.
I think I've identified the leak, it's the connection of the hose to the other hoses (it's quite wet on it).
My question, how do I find this hose in the shop (part number)?
The wet hose in the photo - maybe the photo is not perfect, but maybe there is someone who can identify this?
Thanks over the top for any advice.

[jv]

Have a search for 'coolant hose diagram' for whatever mk4 model you have, just as an example:

https://www.vwpartsvortex.com/v-2003-volkswagen-golf--gti-1-8t--1-8l-l4-gas/cooling-system--radiator-and-components

Then go digging somewhere like:
https://www.autodoc.co.uk/car-parts/radiator-hoses-10200/vw/golf/golf-iv-1j1/8801-1-8-t?categories%5B0%5D=546

Or, just visit your friendly local VW spares place and point at the required item