Hitachi excavator ZX70ZX60 engine drain pipe 3091811

**Part number: 3091811 * * * Name: Hitachi excavator engine drain pipe (radiator drain pipe) * * * Compatible models: * * Hitachi ZX60, ZX70, ZX60-HCMC, ZX70-HHE, ZX80LCK, ZX80SB-HCME, ZAXIS80 * * Interchangeable part number: 4448661 * * * Installation position: from the bottom of the radiator to the engine water pump, cooling system return pipe * * * * Function description: * * Conveys the cooled coolant from the radiator to the engine water pump, forming a coolant circulation heat dissipation circuit and stabilizing the engine operating temperature. **Common fault symptoms: * * Rubber aging and cracking, bulging, leakage of antifreeze, water leakage, causing high engine temperature, boiling, and serious damage to the cylinder. **Process features: * * Multi layer cloth reinforced rubber material, resistant to high and low temperatures, anti freeze corrosion, and vibration; Integrated mold forming, with the same bending, inner diameter, and interface dimensions as the original vehicle, tightly assembled and not easily detached, suitable for construction sites with high dust and continuous vibration conditions, and can directly replace the original vehicle parts. **Alias: Water tank drain pipe, radiator return pipe, cooling drain pipe**