The JCB 332U7589 Expansion Tank is a genuine OEM component designed for various JCB Wheel Loading Shovels. This crucial part maintains optimal coolant levels and pressure within the engine cooling system, preventing overheating and ensuring efficient operation. Manufactured to JCB's high standards, it provides reliable performance and a precise fit for models including 406, 407, 408, 409, 411, 412S, 413S, 414S, 416, 417, 418S, 419S, 426, 427, 434S, 436, 437, 456, 457, and 467.