Alternator for John Deere 5, 6 & 7 Series Tractors
Alternator for John Deere 5, 6 & 7 Series Tractors
SKU:400-24136
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Alternator for John Deere 5, 6 & 7 Series Tractors
12-Volt 90 Amp · 8-Groove Pulley
This 12-volt, 90-amp alternator is a direct-fit aftermarket replacement for a wide range of John Deere 5, 6, 7 and 10/15/20 Series tractors, supplied with an 8-groove pulley, 49mm OD (the original unit came with a decoupler pulley; this replacement is sold less pulley decoupler).
It is internally regulated with an internal fan (IR/IF) and features high-temperature epoxy, heavy-duty rectifiers and high-quality regulators. Note this unit uses a W-terminal, distinguishing it from earlier John Deere alternators that do not have one.
Key Features
- Direct OEM-fit replacement for John Deere 5/6/7 Series tractors
- Internally regulated with internal fan cooling (IR/IF)
- 8-groove pulley, 49mm OD
- Uses a W-terminal connection
- 1-year warranty
Technical Specs
| Specification | Detail |
|---|---|
| Voltage | 12V |
| Amperage | 90A |
| Rotation | CW (Clockwise) |
| Regulator | Internal (IR) |
| Fan Type | Internal (IF) |
| Pulley Class | SD8, 8-groove, 49mm OD |
| Weight | 14 lbs |
| Terminal | W-terminal |
Vehicle Fitment Guide
| Make & Model | Years |
|---|---|
| John Deere 5080M / 5090M | 4-276 Diesel |
| John Deere 5620 / 5720 / 5820 | 4-276 Diesel |
| John Deere 6010 / 6110 / 6110L / 6210 / 6210L | 4-276 Diesel |
| John Deere 6310 / 6310L / 6310S / 6410 / 6410L / 6410S | - |
| John Deere 6510 / 6510L / 6510S / 6610 / 6810 / 6910 | 4.5L / 6.8L |
| John Deere 6205 / 6505 | 6.8L |
| John Deere 6215 / 6415 / 6515 / 6615 / 6715 | 4-276 Diesel / 6.8L |
| John Deere 6020 / 6120 / 6120L / 6220 / 6220L / 6320 / 6320L / 6420 / 6420L | 4-276 Diesel |
| John Deere 6520 / 6520L / 6620 / 6820 / 6920 / 7420 / 7520 | 4.5L / 6.8L |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number | Manufacturer / Brand |
|---|---|
| 400-24136 | Arrowhead |
| ABO0466 | Arrowhead |
| BAL5049X | Arrowhead |
| IA1052 | Letrika (Iskra) |
| MG329 | Mahle |
| MG672 | Mahle |
| 0-123-315-501 | Bosch |
| 112529 | Cargo |
| AL111675 | John Deere |
| AL114092 | John Deere |
| RE204426 | John Deere |
| 12379 | Lester |
| 12379N | WAI |
| 51261017237 | MAN |
Frequently Asked Questions
Will this fit without modification?
Yes, this is a direct replacement for the listed John Deere tractor models - no bracket changes needed. The pulley decoupler from your original unit is not included and should be transferred if fitted.
What is included?
One complete 12V 90A alternator unit, tested before dispatch.
Why does John Deere list a different part number for this?
John Deere's own replacement, AL166645 (0-124-325-166), supersedes the original AL111675/0-123-315-501 - this aftermarket unit is a direct equivalent to both.
How do I know my old alternator has failed?
Common signs are a charge warning light staying on, a battery that won't hold charge, dimming lights, or unusual noise from the unit.
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