You need to be more specific about which Boomer series. There are several Boomer series made by different manufacturers depending on the year of manufacture and model number. The early 4 digit models, for example the Boomer 3040, were made by Shibaura, the current 4 digit models are made by NH (Boomer 3040-50 cab models) , and the Boomer 2 digit models, for example the Boomer 35, are made by LS. The Boomer 8N was made by Shibaura and is a great tractor.