4 Inch (3 Blade Snowblower Impeller Kit)
FIT`S MOST WALK-BEHIND SNOWBLOWERS AND SOME  LAWNTRACTOR ATTACHMENTS, This 4 Inch Snowblower Impeller Kit consists of 3 rubber paddles that bolt on to the impeller blades and create a seal between the blades and the housing, by creating this seal between the impeller blades and the housing all the snow Is discharged evenly and nothing accumulates in the housing, A simple comparison would be that of a water pump. If the impellers are worn or damaged there is no seal and the water pump will move very little water, if any at all.