The McCormick 6691171A2 Control Unit is an original equipment manufacturer (OEM) part designed for McCormick X4 series agricultural tractors. This genuine control unit ensures optimal electronic system management, providing reliable and precise operation. With a compact design, it measures 95 mm in length, 51 mm in width, and 30 mm in height, weighing 0.12 kg. It is a direct replacement for the original unit, guaranteeing seamless integration and restoring full functionality to compatible McCormick tractor models.