OTTO Excavator Spare Parts Zx200-3 4Hk1 Relay 8980056310 898005-6310 8-98005631-0 For Isuzu The OTTO Excavator Spare Parts for Isuzu, specifically for the Zx200-3 with the 4Hk1 engine model, is a Relay with the part number 8980056310 (also referenced as 898005-6310 or 8-98005631-).