Identify VW part number and availability.

[salex]

I hope this forum can help me identify the part number and potential availability.
I have a 1983 T25 with a Water cooled boxer 1900cc DG engine. A steel waterpipe has developed a rust pin hole leak. I have repaired the hole with AB chemical metal but suspect this is only a temporary measure and would prefer to replace the pipe, but I am unable to identify the part number or availability.
The water pipe has a coolant distribution manifold at one end, including the water temperature sensor.
Many thanks.
Salex

 

[Aidan]

025 121 081 D

Parts Emporium seemed to have some used uns when I looked a couple of days but I don't think their website is always fully up to date

[salex]

Thank you Aidan. That is definitely the part I require, and at least I have the correct part number. The next problem will be locating one, but thank you for identifying the part. Salex.