You will need to verify that you have a 1 x 3" shaft before ordering. You may have to use minor parts off of your original engine to make either of these work. If you use the 356447-0079, the flywheel fan and shrould is 1-3/8" thicker on this engine than the 303447 series. If this is a problem, the parts off of your original engine would work on it. You can remove the regulator and use your current one if yours has the 16 amp charging system on it.
