The ebay.de auction link
http://www.ebay.de/itm/EU-220V-direkt-Kuehlung-Fan-165mm-/321154882349?
The Fan was used for cooling the same diameter engine, the both parts was in tube for more effective cooling.
The diameter is 165mm in the electric part 180mm.
For interest email me please on
madsusies@gmail.com the payment through PayPal.
Certainly the price, I have the fan from work, from a dismantled machine.
The shipping fee is 15Eur due the weight
For safety reason if You wish I can give the fan on ebay. Sry for my English.
Thanks and wish a nice summer 4all.