The ZF 4139330581 is a genuine ZF input shaft designed with a 50mm diameter flange, ensuring precise power transmission within compatible gearboxes. This critical component weighs 1.6 kg and has an overall length of 170 mm. It features 18 teeth on one end and 23 teeth on the other. This input shaft is a direct fit for various Massey Ferguson tractor models, including the 5400, 6400, 7400, and 8400 Series, ensuring optimal performance and durability in demanding agricultural applications.