1660655sm, 1716127sm, 1686821sm Simplicity Auger Gearbox1660655SM, 1716127SM, 1686821SM SIMPLICITY AUGER GEARBOX. THIS IS A USED OEM PART. If you have any questions about this item, please feel free to sent a message, I will do my best to assist. Please confirm this is the correct part for your equipment, by using a oem parts.