John Deere 400 420 430 Model 50 Snow Blower Snow Thrower Am35456 Curtis Gear BoxJOHN DEERE 400 420 430 MODEL 50 SNOWBLOWER/SNOWTHROWER AM35456 CURTIS GEARBOX PERFECT CONDITION. THIS IS A VERY NICE USED GEARBOX. IT CAME OUT OF A SNOWBLOWER THAT HAD LITTLE USE ON IT. IT FEELS VERY SMOOTH WITH NO FREE PLAY.