This alternator is built to OEM specifications as a direct fit and function replacement for the Hitachi LR220-23 unit fitted to TCM and Mitsubishi lift trucks running Isuzu 4JB1 and C240 diesel engines, and to Isuzu industrial equipment using the same charging system. It is an IR/EF unit - internally regulated with an external fan - rated at 24 volts and 20 amps.
The unit rotates clockwise (CW), is wired for negative earth and uses a single-groove (1V) solid pulley of 72mm (2.835 in) diameter, matching the original factory configuration so it fits straight into place without modification. It replaces Isuzu 5812003300 and 5812003350 directly.
Key Features
- 24-volt, 20-amp output
- IR/EF design - internally regulated, externally cooled
- Clockwise (CW) rotation, negative earth
- 1V (single-groove) solid pulley, 72mm diameter
- Built for TCM and Mitsubishi lift trucks with Isuzu engines
- Replaces Isuzu 5812003300 / 5812003350 and Hitachi LR220-23
- 12-month warranty as standard
Technical Specs
| Specification |
Detail |
| Voltage |
24V |
| Amperage |
20 Amp |
| Rotation |
CW (Clockwise) |
| Regulator |
IR (Internally Regulated) |
| Fan Type |
EF (External Fan) |
| Pulley Class |
1V (Single Groove) |
| Pulley Diameter |
72mm (2.835 in) |
| Polarity |
Negative earth |
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 |
| TCM FD20Z, FD23Z, FD25Z, FD28Z, FD30Z Lift Trucks (Isuzu C240 / 4JB1 Diesel) |
All years |
| TCM SD10Z, SD12Z Lift Trucks |
All years |
| Mitsubishi FD-10, FD-14, FD-15, FD-15T Lift Trucks |
All years |
| Mitsubishi FDC-20-D, FDC-25-D Lift Trucks |
All years |
| Isuzu Industrial Equipment (4JB1 Engine) |
All years |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 5812003300, 5812003350 |
Isuzu |
| LR220-23, LR220-24 |
Hitachi |
| LRA02437 |
Lucas Electrical |
| 12114 |
Lester |
| AHI0077, 400-44057 |
Arrowhead / J&N |
Frequently Asked Questions
Will this alternator fit my TCM lift truck without modification?
Yes. This is a direct OEM-fit replacement built to the same specification (24V, 20A, IR/EF, CW rotation, 1V pulley) as the original unit fitted to Isuzu-engined TCM lift trucks.
Which engines does it suit?
Isuzu 4JB1 and C240 diesel engines as fitted to TCM and Mitsubishi lift trucks and Isuzu industrial equipment.
What's included with this part?
You receive the alternator unit only. Mounting hardware and pulleys are not included unless already fitted to the original unit you are replacing.
What does IR/EF mean?
IR/EF stands for Internally Regulated, Externally Fan-cooled - the voltage regulator is built into the alternator body and cooling air is drawn in by an external fan.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
