OTTO Excavator Parts Sh450-3B 6Uz1 Thermostat Tube O-Ring 9095652710 909565-2710 9-09565271-0 For Isuzu The OTTO Excavator Parts Zx330 6Hk1 Thermostat Tube, with part number 1137105660, is designed for Isuzu engines. It facilitates proper temperature regulation, crucial for engine performance and longevity.