Description
NEW Isuzu 4JB1 NHR Hicom 2.8L 5-Speed Manual Transmission Gearbox, suitable for Isuzu NHR/N-Series light-duty trucks fitted with the 4JB1 diesel engine.
The 4JB1 is a 2,771 cc 4-cylinder diesel engine, and NHR specifications list a 5-speed synchromesh manual transmission.
Specifications
| Specification | Details |
|---|---|
| Make | Isuzu |
| Application | NHR / Hicom |
| Engine | 4JB1 |
| Engine Capacity | 2.8L / 2,771 cc |
| Transmission | Manual |
| Gears | 5-Speed + Reverse |
| Gearbox Type | Synchromesh |
| Transmission Code | MSB-5S* |
| Drive | 4×2 |
| Condition | NEW |
| Fuel Type | Diesel |
| Fitment | Isuzu NHR / N-Series |
*The MSB-5S designation is used for 4JB1 NHR applications, although gearbox specifications can vary by model/year, so the original gearbox and mounting configuration should be checked before purchase.
Gear Ratios
- 1st: 5.016
- 2nd: 2.672
- 3rd: 1.585
- 4th: 1.000
- 5th: 0.770
- Reverse: 4.783
Features
- Brand-new replacement gearbox
- 5-speed manual transmission
- Synchromesh forward gears
- Designed for the Isuzu 4JB1 diesel application
- Suitable for commercial/light-duty truck use
- Ideal replacement for a worn or damaged original transmission
Fitment note: Please confirm the engine number, existing gearbox code, bell-housing, mounting points and input shaft before ordering, as 4JB1 gearboxes can have different configurations.





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