Peter, what model, year & engine was this for please. I’ll look at LLLParts catalogue and see what I can find.
For anyone else looking to do the same, I think an easier route would be to look for a tube from the same engine from a slightly earlier build, all the V6 single turbo engines are mechanically identical (or so I’ve been told by a number of specialists for my MY [2015]), it’s how I got a dipstick for mine, I looked at the items list for a 2012/2013 model.
Ive been using ‘LLLParts’, who use a fairly comprehensive an online illustrated parts catalogue.
you can search by year too, which made it easier.