This Motorola-style alternator is built for John Deere tractors, backhoe loaders and lift trucks, covering the 1020, 1520, 2020, 2030, 2440, 2630 and 2640 tractor range along with the 301, 302A and 480A/B/C series, engineered to OEM specifications for a direct fit and function replacement.
It delivers a 37 amp output at 12 volts, uses an isolated diode type circuit with an externally mounted regulator and external fan (ER/EF), meaning the regulator sits outside the main housing as a separate component - on some applications it may instead be fitted on the rear of the unit, so it is worth checking your original part before ordering.
Key Features
- Motorola-style design for John Deere tractors, backhoe loaders & lift trucks
- 12 volt, 37 amp output
- Externally regulated with external fan (ER/EF)
- Isolated diode type circuitry
- Covers John Deere 1020, 1520, 2020, 2030, 2440, 2630 & 2640 tractors
Technical Specs
| Specification |
Detail |
| Manufacturer |
Motorola |
| Voltage |
12V |
| Amperage |
37A |
| Regulator Type |
External (ER) |
| Fan Type |
External (EF) |
| Diode Type |
Isolated |
Vehicle Fitment Guide
Years shown are the overall coverage span for this part. Please confirm against the OEM part number on your original unit before ordering.
| Make & Model |
Years |
| John Deere 1020 Tractors |
1965-1973 |
| John Deere 1520 Tractors |
1968-1973 |
| John Deere 2020 Tractors |
1965-1972 |
| John Deere 2030 Tractors |
1971-1975 |
| John Deere 2440, 2630 & 2640 Tractors |
Not specified by supplier |
| John Deere 301, 302A & 480A/B/C Tractors, Backhoe Loaders & Lift Trucks |
Not specified by supplier |
| John Deere 400/401 Applications |
Not specified by supplier |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| AT21618 |
John Deere |
| AT21619 |
John Deere |
| TY1428 |
John Deere |
| A-919 |
Dixie |
| 7353 |
Lester |
| 47-1342 |
Minnpar |
| A12NJD452 |
Motorola |
| A12NJD454 |
Motorola |
| 110-30 |
Prestolite |
| 110-57 |
Prestolite |
| 50201 |
Remy |
Frequently Asked Questions
Will this fit without modification?
Yes, this alternator is built to OEM specifications for a direct, bolt-in fit on covered John Deere tractor, backhoe loader and lift truck applications.
What's included?
You receive one fully assembled 12V 37A Motorola-style alternator, ready to install.
How do I know my old alternator has failed?
Common signs include a charge warning light staying on with the engine running, dimming or flickering lights, a battery that will not hold charge overnight, or an unusual whining or grinding noise from the unit as it turns.
Where is the regulator fitted?
This is an externally regulated (ER) unit, though on some John Deere applications the regulator is fitted on the rear of the housing instead - check your original unit before ordering if unsure.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
