The JCB 02911903X is a genuine OEM coolant expansion tank designed for a wide range of JCB machinery. This essential component manages the cooling system's fluid expansion and contraction, ensuring optimal engine temperature regulation and preventing pressure build-up. It is compatible with numerous JCB models including 3CX and 4CX backhoe loaders, various wheel loaders (400 series), telescopic handlers (500 series), skid steer loaders, compact track loaders, rough terrain forklifts, mini excavators, and both wheeled and tracked excavators (JS series). With dimensions of 250mm length, 150mm width, and 150mm height, and a weight of 0.5 kg, this robust reservoir is built to JCB's high standards for durability and performance.