To follow up on an _old_ thread, Wurth (http://www.wurthwest.com) has retrofit kits for Audi air conditioners. For reference, they are suppliers of OEM paints which I've used with teriffic results on "glass beaded" alloy wheels. Hope this is not too late to be of some help. Doug '87 4kcsq - 180k '83 Ur-q - 68k http://members.tripod.com/~ur-q/inreno.jpg