Does your Broken Arm have this Part Number SG-A33  If it does you can use this with the Measurements for a Perfect fit.  Double Click on these 5 Pictures they will enlarge. The Motor hardware is included in this purchase. Taken from a 52 inch Hampton bay ceiling fan.  It is Gold in color.     This listing is for one arm With Motor Hardware.     UPC Listed Above with Model.                                                                                                                  #125