Drive Disc For Snapper SnowBlowers, Part Number 1-7226, 7017226. Also Toro 37-6570
Drive Disc Replaces Snapper 17226, 1-7226.  Fits Snapper 4, 5, and 8HP Snow Thrower models 4222, 5222, 5242, 7222, 7242, and 8264.   Also replaces Toro part number 37-6570