OTTO Excavator Parts Zx200-3 4Hk1 Eccentric Shaft Tooth 8973244720 897324-4720 8-97324472-0 For Isuzu Heavy-duty eccentric shaft gear for ZX200-3 excavators with Isuzu 4HK1 engines. Built to maintain critical engine timing under demanding site conditions, effectively reducing unplanned downtime.