OTTO Excavator Parts Zx330-3 6Hk1T Cooling Water Bypass Pipe 8970866940 897086-6940 8-97086694-0 For Isuzu Premium Isuzu 6Hk1T cooling water bypass pipe (8970866940) for OTTO Zx330-3. Precise fit, anti-corrosion, meets OEM specs. Ample stock & fast dispatch—reliable for your steady client supply.