This is a A-AR62401-N ALTERNATOR, NEW PN: AR62401-NMain Description As Following : A-AR62401-N ALTERNATOR, NEW PN: AR62401-N Found in Section & Models : Ignition & Electrical Parts > Alternators & Related Parts, John Deere TRACTOR, COMPACT: 3120, John Deere TRACTOR: 1020, John Deere TRACTOR: 1030, John Deere TRACTOR: 1120, John Deere TRACTOR: 1830, John Deere TRACTOR: 2040 (w/ External Voltage Regulator), John Deere TRACTOR: 2120, John Deere TRACTOR: 2840 (w/ External Voltage Regulator), John Deere TRACTOR: 2940, John Deere TRACTOR: 820(3 Cyl.), John Deere TRACTOR: 830, John Deere TRACTOR: 920 Associated Items : New Also A-FRM-JD, A-JD-O-OMR48388, A-JD-O-OMT26335, A-JD-S-SM2071, A-SMJD37, A-FRM-JD, A-JD-O-OML29383, A-FRM-JD, A-JD-P-PC1289, A-JD-S-TM1051, A-JD-O-OMR71859, A-SMJD202, A-JD-S-TM4336, A-JD-O-OMR71860, A-FRM-JD, A-JD-S-TM4212, A-SMJD201 And : Alternator does not come with Regulator. Type: Bosch Volt/Amperage: 12/28