I will agree, I do not spell very well at times, I was told to look for a 2, I have a 52 with a 235 eng,,12 volt conversion,,,I replaced it with a 4 which is what was on it,,,,and has been for over 7 yrs, so I hope that it will last another 7 or so....If I need to change it, someone tell me if it makes that much difference,,,,,thanks,,,Fred