festive greetings to all!.
I've sprung a coolant leak

, unsure of part number. It's the pipe that goes from the expansion tank to the water pump? The pipe has got a split where it's gone across the alternator belt ( alternator has been off due replacement of the voltage regulator) so the belt does need replacing now due to the leak!
I think it's this part
Is it easy to replace?
It's for a 1.9 DG
TIA