A-B17027652YP-AI GEAR, WORM,One New Aftermarket Replacement Worm Gear for Snapper Murray Snow Blowers This worm gear is a key component of the auger drive assembly in Snapper and Murray two stage snow blowers. Mounted on the auger shaft, the worm gear transfers rotational power from the drive system to the auger, enabling the machine to cut through and move snow. Worn or damaged worm gears result in loss of auger function and must be replaced to restore proper snow throwing