Found this on http://www.gmcmotorsport.co.uk for £12 its for a saxo but maybe if you contact them they.ll know where to get one, alternatievely get one made at a machine shop, its just a tube blanked off at one end with a thread tapped in it. Shouldnt cost a great deal to get made, then you just cable tie it ot of the way of moisture.
Lambda sleeve for cars with 2 lambda probes, when cat is taken off - £12
Lambda sleeve for cars with 2 lambda probes, when cat is taken off - £12