Oregon 73-050 Auger Assembly, Complete-MTD Replaces: MTD 984-04027A. 984-04027. 984-5485. 784-5485 . 706-15686-00-11. 684-04027A. 684-04027. 684-04025A. 684-04025 Fits 21" single stage snow throwers 31*1** and 31*2** models built 1990-2005 Use with Oregon 73-053 Rubber Paddle set