The McCormick VP121489 is a genuine OEM steering ball joint designed for various McCormick X-series agricultural tractors. This critical component ensures precise steering control and durability, maintaining optimal performance and safety. It is compatible with McCormick X4, X5, X6, X7, and X8 series models, including X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.35, X4.45, X4.55, X5.20, X5.30, X5.40, X5.50, X5.60, X6.420, X6.430, X6.440, X6.460, X6.470, X6.480, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X8.660, X8.670, X8.680 tractors. It also cross-references with Massey Ferguson OEM part numbers 3704289M1, 3704289M2, 3704289M3, 3704289M4, 3704289M5, and 3704289M6, fitting MF 5700, 6700, 7700, and 8700 series.