Hi all. Newbie member here, but suffering same frustration at cost from Vauxhall for this relatively small piece of hose. In fact I have been frustrated since the first month I bought it...but that's another story.
If its any help, I spoke to my local dealersparts department this morning and they gave me some updated part numbers. To rub salt in the wound, she did say "oh, that's quite expensive isn't it ".
Anyway, my local garage gave me an original part number 22737400, which Vauxhall then say was superseded by 95047790 and then again by 95383819.
I found a UK supplier on ebay for just £28 for 95383819 and will see where that gets me with the garage agreeing to fit it. Got to be worth a try rather than the original £475 I was quoted by the garage. I will update at the end of the week as to how I get on if anyone is interested. Any thoughts on my approach?