This part is commonly Used on models:
144-2688 48in Chute Gate Kit, Z Master 4000 Series Riding Mower
144-6571 52in Chute Gate Kit, Z Master 4000 Series Riding Mower
144-6572 60in Chute Gate Kit, Z Master 4000 Series Riding Mower
163-4118 48in Chute Gate Kit, Z Master 2000 Series Riding Mower
163-4119 52in Chute Gate Kit, Z Master 2000 Series Riding Mower
163-4120 60in Chute Gate Kit, Z Master 2000 Series Riding Mower