I can confirm that the right part is 209650320 from eurocarparts.
Be careful to check they include the gasket as my friend was given a used one...
Thanks for the help.
I fitted one
rubbish casting when compared to the original
which has a machined section for the Hose to clamp on to and is more streamlined inside
having said that it lasted a couple of years, did the job with no problems before I got rid of the car.