The Kubota 1143063040 Transmission Assembly is a genuine OEM replacement part designed for various Kubota B-Series compact tractors. This complete transmission unit ensures optimal power transfer and reliable operation for compatible models, including B2601HSD, B2650HSD, and B3350HSD series. With confirmed dimensions of 660.4 mm length, 457.2 mm width, and 457.2 mm height, and a weight of 56.699 kg, this assembly is built to Kubota's exact specifications for a precise fit and long-lasting performance.