For comparison of parts, you can use CMSNL.com . If the corresponding part numbers are different, the parts are different. In this case , the hondamatic has a center number of 417 and the manual model has a center number of 413. Therefore, the parts are different.Also, if you goto Parzilla with the part number and put it into their search box, if the piece is available, it will list all the models that part fits. This is my method. Others may have similar methosds.