Posted by apb (in NY) on Sunday, January 29, 2006 at 2:53PM :
A friend asked me about putting one of these in his M35, and asked where I found mine. Since mine was a retirement gift from my previous employer, I did a quick Google and found these guys. Might be a helpful site:
http://www.tractorpartsinc.com/radiator_hose_heaters_271_ctg.htm