Find the husqvarna usa web site. I get to from www.mxlarge.com links. They have a links section that lists dealers and interesting vintage places. I have found new parts from Hall's in Springfield Illinois. Cagive still makes stuff to support those old monsters. I have a 1984 AE500 and was able to get things like the rubber parts from the carb to the airbox and carb to motor. Also stuff like clutch parts and motorparts.
Weimedog beat me to it. Halls Husky's is 45 minutes from me and has the largest Husky parts inventory in the nation. Over $3mil
worth. If they don't have it , Jay will know if you can get it! Ask for Raymond!