The OTTO YA00004881 is a vital hydraulic oil cooler for the Hitachi ZX870‑5G excavator cooling system. It efficiently dissipates heat from hydraulic fluid, preventing overheating, maintaining stable system pressure, and protecting key hydraulic components from premature wear.

Maintain your excavator’s cooling system performance with the OTTO 4723688 Radiator Water Tank, a premium aftermarket component engineered for Hitachi ZX870-5G excavators. This high-quality water tank ensures secure coolant storage and smooth circulation, offering a cost-effective alternative to OEM parts while delivering reliable, leak-proof performance for heavy-duty operation.