Roger - I just yesterday repaired and installed my Mighty Wiper that 'smoked' last year - cold solder joint - and am using the Big Al's arm and wiper blade noted above. I used it on the boat wiper motor as well. What might have to be done is to use another arm as the shaft is .25 and with mine, you have to do some 'adapting' to make a new blade work, which I have done in the past.