I'm looking for a small header tank and eBay pictures aren't that helpful. The Mk3 Golf has a spherical header tank that looks about right. Does anyone on here know how tall they are? If you have a Mk3 Golf can you do me a favour and measure it please?

Most of the VAG range us a variant of that one, I have a mk4 Golf, and the seven has one from a Polo - I will measure tomorrow and post them up.

That would be great! thanks!

164mm at the seam

Thanks for that Mark. Its quite a bit bigger than I have room for.