Alternator for John Deere 4040: heavy-duty replacement for OEM 10459519 (12V 90A). Built for reliable field replacement performance.
Fits These Models
John Deere
- 4040 (1981-1982 — 6-404 Diesel)
- 4050 (1983-1988 — 6-359 Diesel)
- 4050 (1983-1988 — 6-466 Diesel)
- 4240 (1981-1982 — 6-466 Diesel)
- 4250 (1983-1988 — 6-466 Diesel)
- 4440 (1981-1982 — 6-466 Turbo Diesel)
- 444D (1987-1988 — 329 Diesel)
- 4450 (1983-1990 — 6-466 Diesel)
- 4640 (1981-1982 — 6-466 AC Diesel)
- 4650 (1983-1988 — 6-466 Diesel)
- 4840 (1979-1982 — 6-466 Diesel)
- 4850 (1983-1988 — 6-466 Diesel)
- 544D (1987-1988)
- 5720 (1982-1986 — 466 Diesel)
- 5730 (1985-1989 — 6 Cyl. 7.67L 7673cc 468cid)
- 5820 (1982-1986 — 619 Diesel)
- 5830 (1985 — 6 Cyl. 10.11L 10114cc 617cid)
- 644D (1987-1988)
- 7445 (1987-1994 — 359 Diesel)
- 8440 (1979-1982 — 6-466 Diesel)
See the full fitment table above for all 25 compatible applications.
OEM Cross-Reference Numbers
Replaces the following OEM part numbers: 10459519, 021000-7420, 021000-7410, 021000-8750, 100211-0080, 100211-0081, 100211-0290, 100211-0291, 100211-0292, 100211-0790, 021000-8740, 021000-8741, 100211-0070, 100211-0071, 100211-0280, 100211-0281, 021000-8751, 100211-5800, AN193461, AN19361, AR87204, AR87205, AR887204, AR93447, AR93448, AT103789, AT103798, SE501363, TY26050, TY6621.
Please verify the OEM reference number and equipment fitment before ordering.








