Plastic nuts!

[petethefeet]

Hi,
I am about to tidy up the front bumper and put some new end caps on. I have ordered the fitting kits and end caps from Brickwerks but I need some more ofthe plastic nuts that fit into the body work where the bumper end caps screw to the body with the long self tappers.
I went to the local VW van centre, the bloke was very helpful but we could not find the part on the exploded diagram. I have looked on line and on the http://www.vagcat.com" onclick="window.open(this.href);return false; info without luck.
Where can I get them and what is the part No.????

Also.......
The other day I did the tubes from the vent tanks in the front wheel arches (no petrol smell in the cab now ), when I pulled the top vent tube out of the box section a small trumpet shaped rubber bit fell off the end of the pipe, it has the part No 321 201 890 on it. I assume those clever Germans fitted it for a reason but what does it do? It just look like a rubber trumpet; nothing in the middle. Should it have a valve in the middle??

Thanks for the help.

[petethefeet]

Well....
I took the front bumper off last night and the end caps were screwed directly into the body work, so no plastic nuts fitted into the panel and a nice place for it to rust from

Any answers on the trumpet thingys on the tank vent pipe???

Thanks

[Oldiebut goodie]

As far as I can see there is nothing in there - the valve is in the top of the expansion tank so no need for another one there. Not looked at one but looks like a spark plug shroud type of object that just protects the end for some reason.