ZAX130-5A Negative Water Tank category supplies replacement water tanks (radiator coolant reservoirs and expansion tanks) for Hitachi ZAX130-5A and related excavator models. These tanks manage coolant volume changes as the engine and hydraulic system heat and cool, maintaining proper system pressure and preventing overheating.
A properly functioning water tank is essential for maintaining optimal operating temperature and preventing coolant loss. Our replacement tanks are designed for direct fitment on matching excavator models. For more cooling system components, see our Hydraulic Fan Motor and Excavator Engine Assembly categories.