Replaced it late last year and needs replacing again already!!! Seems oil is peeing out, it's got into the heat exchanger... Had a bit of a fright when I saw smoke coming out of the heater vents on dash... I'll see if I can find a good quality one as the new one is actually worse than the old 'original' hard solid thing that I took off!
Well after replacing the bellow just a couple of months ago and hardly driven anywhere its expanded and is leaking already. This is the old part that I replaced with an new - replacing JK with VWH So as the JK one lasted longer than my VWH one I'm going to get a new one from JK again. Why oh why....
Send it back to VWH and ask for a refund! Hassle, but worth doing. Hopefully, they'll realise their product is Marmitee.
If its any help (I've just responded to your request for one) I did use a cable tie on my one as I wasn't overly confident that it would hold because it is just sooooooo soft. It only seems to hold on with luck, wishes (today is fairy day so make a wish ) and hope. Trick with the cable tie is not to do it up too tight but just tight enough to hold it over the flange.
That sounds like a plan. And much stronger rubber too. They really are the cheapest bits of rubber. Just had a look on the VWH website: Quality: Repro quality. And someone's given it 5/5 in their review.
There is something about the quality of rubber used on aircooled bits, I bought some new steering arms for Winnie 4 weeks ago, looked at them yesterday and they were split - a month and they have gone from being new parts to an MOT failure.....now that is rubbish!!