One New Secondary Water Pump Fits Massey Ferguson Tractors With Perkins 4.203 Diesel Engines. Fits Massey Ferguson Part Numbers: 141312574, 3637372M91, 3641250M91, 3641250R91, 3641250R92, 3641250V91, 3641312R91, 740611M91, 829259M1, 747597M91. Fits Perkins part numbers: 41312063, 41312167, 41312511, 41312574, 41312574T, U5MW0010, U5MW0055, U5MW0061, U5MW0089, 6005005033, 6006390154Fits: 65, 65 UK, 65 MKI, 65 MKII, 155, 158, 165, 165 UK, 255, 260, 560, 765, Landini Prima 6000 Industrial (incl. Loader/Backhoe): 30, 40B, 50A, 302, 304, 3165*Later years some of the above models used a different engine. To ensure compatibility, please confirm your engine model ends in 192 or 203.*