The JCB 02941123 Plug Screw Assembly is a genuine OEM component designed for a wide range of JCB agricultural and construction machinery. This essential part ensures secure sealing and proper function within hydraulic or fluid systems. Weighing approximately 0.12 kg, it is a direct replacement for maintaining optimal performance and reliability across compatible JCB models including 3CX, 4CX, 520, 530, 540, and many others.