Only genuine AGCO parts have the precise fit, reliability, and quality to keep your equipment operating at peak performance. From our factory-trained technicians to our industry leading parts availability, no one knows your equipment better. We don't compromise on quality or performance, and neither should you. This ignition switch fits these AGCO models: ST35 / ST40 Compact Tractor, ST35 Compact Tractor, ST35H / ST40H Tractor, ST35X / ST40X Compact Tractor, ST40 Compact Tractor, ST45 Compact Tractor, ST45H Tractor, ST55 Tractor. Fits these Challenger models: MT265 Hydro Tractor, MT265 Tractor, MT265H / MT285H Tractor, MT275 Tractor, MT285 Hydro Tractor, MT285 Tractor, MT 295 Hydro Tractor, MT295 Tractor, MT297 Tractor 12 X 12 Synchroshuttle, MT297 Tractor 16 X 16 Power Shuttle. Fits these Massey Ferguson models: 1125 Tractor, 1140 Tractor, 1145 Tractor, 1165 Tractor, 1429 Tractor, 1433 / 1440 Tractor, 1433H / 1440 Tractor, 1433V / 1440V Tractor, 1445 / 1445H Tractor, 1455 Tractor, 1455V Tractor, MF 1240 Compact Tractor, MF 1250 Compact Tractor, MF 1260 Compact Tractor.