Yes, you do need new hoses to install the new cooler. Not only is it built for better durabilty it is larger for increase cooling capacity. Have your dealer contact the BC rep, I would be supprised if he didn't approve for fair share of parts cost if not full cost of parts.
gumshu, Same cooler fits all 200 model Bobcat and Kioti CK25, 27, 30, & 35.
You could buy that $50 cooler on ebay and hope it doesn't start leaking in next 150 hrs. or have the new style put on and have some piece of mind. Easier for me to say because mine has the updated cooler on it.