New Place for Parts
 

I had the most difficult time finding a exhaust heater tube for our T model. Finally, a source led me to (of all places) France! There was a literal stockpile of these parts. If you're having difficulty finding anything for your 337 you may want to try Aerostock in Paris, France. Jean Marc Glinkowski is the director of Aerostock and he was very helpful. You have to call before 10am eastern or they will be closed until the next business day. His phone # is 011 33 1 48 359507. Tell him Shawn (female type) sent you. There is also a web site aerostock.fr , but I was unable to do a product search and currently the site is all in French.