One Brand New Aftermarket Replacement Water Pump with Hub. Fits the following makes, models and machines: Also fits Massey Ferguson Compact Tractors: 1240, 1250, 1260, 1429, 1433V, 1433, 1440V, 1440, 1520, 1529, 1532, 1533, 1540 Also fits AGCO Tractors: ST30, ST34A, ST35, ST35H, ST35X, ST40, ST40H, ST40X, ST41A Also fits Challenger Tractors: MT265, MT265B, MT265H, MT275, MT275B, MT285, MT285HTechnical Information: Includes O-ring seal, secures to block. Replaces part(s): CSU80-0019, 3757045M91, 3757045M92, 3757045M93