OTTO Excavator Parts Zx330-3 6Hk1T Cooling Water Bypass Pipe 8980253300 898025-3300 8-98025330-0 For Isuzu Durable 8-98025330-0 pipe fits OTTO Zx330-3 & Isuzu 6Hk1T. Resists mining dust/impact, pressure-stable. Guarantees steady engine cooling for non-stop heavy work.