This genuine Massey Ferguson 963839M1 brake disc is designed for a wide range of Massey Ferguson tractors, including models from the 100, 200, 300, 500, 600, 1000, 2000, 3000, 4000, 5000, 6000, and 8000 series. It ensures reliable braking performance and is an essential component for maintaining the safety and operational efficiency of your agricultural machinery. This part replaces superseded OEM part numbers such as 1660144M1, 1660144M2, 1660144M3, 1660144M4, and 1660144M5. The disc features an outer diameter of 178 mm, an inner diameter of 100 mm, and a thickness of 6 mm, with a weight of 0.9 kg.