This is a A-530440M91 Alternator, Delco PN: 530440M91Main Description As Following : A-530440M91 Alternator, Delco P.N: 530440M91 Type: DelcoVolt/Amperage: 12/37 Stocked As: A-1100585 Found in Section & Models : Ignition & Electrical Parts > Alternators & Related Parts, Massey Ferguson TRACTOR: 1155 (w/o Air), Massey Ferguson TRACTOR: 235 Associated Items : New Also A-MH-O-MF1105ETC, A-MH-P-MF1155, A-MH-S-MF1105ETC, A-SMMF201, A-MH-O-MF235GANDD, A-MH-P-MF235, A-SMMF42 And : Type: Delco Volt/Amperage: 12/37