This genuine Massey Ferguson 1423990M1 collar is a critical component designed for a wide range of Massey Ferguson tractors. It provides secure spacing and support within mechanical assemblies. Confirmed fitment includes models from the Massey Ferguson 100, 200, 500, 600, 3000, 3100, 3600, 4200, 4300, 5300, 5400, 6100, 6200, 6400, 7400, 8100, and 8200 series. The collar features an inner diameter of 25.5 mm, an outer diameter of 45 mm, and a thickness of 10 mm, with a weight of approximately 0.05 kg.