The John Deere L78944 Countershaft is a genuine OEM component designed for various John Deere 40- and 80-series agricultural tractors. This essential part ensures efficient power transmission within the machinery. Measuring approximately 254 mm in length, 51 mm in width, and 51 mm in height, and weighing around 0.95 kg, it is built to John Deere's rigorous specifications for durability and performance. Compatible with models such as 4040, 4240, 4440, 4640, 4840, 8430, 8630, 8440, 8640, 8450, 8650, and 8850.