Genuine JCB 335Y5639C window lock, an essential OEM part designed for secure closure and reliable operation of windows on various JCB machinery. This authentic JCB component ensures a perfect fit and dependable performance across a wide range of compatible models, including JCB 3CX, 4CX, 531, 535, 540, 541, 550, 560, 520, 525, 526, 527, 528, 530, 532, 533, 536, 537, 538, 539, 540, 542, 545, 546, and 550.