MTD/Sears 22 Auger Gearbox with Impeller Assembly from 31AM32AD799 BlowerMTD/Sears auger gearbox, impeller, pulley and augers from 22 2 stage blower model 31AM32AD799. Pulley is 6″ in diameter, plastic impeller is 9 1/2″ and auger diameter is 9 1/2. The item “MTD/Sears 22 Auger Gearbox with Impeller Assembly from 31AM32AD799 Blower” is in sale.