This is a A-TY1427 Alternator, Motorola PN: TY1427Main Description As Following : A-TY1427 Alternator, Motorola P.N: TY1427 Type: MotorolaVolt/Amperage: 12/51 Stocked As: A-SE501356 , Crosses To: A-AL-921 JOHN DEERE Found in Section & Models : Ignition & Electrical Parts > Alternators & Related Parts, John Deere SWATHER/WINDROWER: 800, John Deere SWATHER/WINDROWER: 830, John Deere TRACTOR: 400 Associated Items : New Also This is An Aftermarket Product And : Type: Motorola Volt/Amperage: 12/51