The John Deere R39843 is a genuine OEM hydraulic pump shaft designed for various John Deere tractor models. This critical component ensures the proper function of the hydraulic system, providing reliable power transmission. It is compatible with 4040, 4240, 4440, 4640, 4840, 8430, and 8630 Series Tractors, ensuring optimal performance and durability for demanding agricultural applications. With a length of 95 mm and a weight of 0.5 kg, this shaft is built to John Deere's exacting standards.