Isuzu
Isuzu BU-4JJ1T
4JJ1 Series
Isuzu BU-4JJ1T is a 2.999 L inline-4 turbocharged diesel engine configuration. EPA annual certification data lists 50 kWm at 1800 RPM under Interim Tier 4.
- Electrical Output
- 50 kW
- Cylinders
- L4
- Displacement
- 2.999 L
- Rated Speed
- 1,500 RPM
Isuzu BU-4JJ1T generator set context
The Isuzu BU-4JJ1T is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 50 kW / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
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Technical Specifications
| Brand | Isuzu |
| Model | BU-4JJ1T |
| Series | 4JJ1 Series |
| Configuration | L4 Turbocharged |
| Cylinders | 4 |
| Displacement | 2.999 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Interim Tier 4 |
| Certifications | U.S. EPA Interim Tier 4 |
| Country of Origin | Japan |
Frequently asked questions
What fuel does the Isuzu BU-4JJ1T use?
The Isuzu BU-4JJ1T is a diesel generator-set engine.
What is the displacement and cylinder configuration of the BU-4JJ1T?
The Isuzu BU-4JJ1T is an inline-4 (4-cylinder) engine with a displacement of 2.999 L.
What emissions standard does the BU-4JJ1T meet?
The Isuzu BU-4JJ1T is certified to U.S. EPA Interim Tier 4 emissions standards.
Is the Isuzu BU-4JJ1T still in production?
Yes — the Isuzu BU-4JJ1T is a current production model.
Reference
- Canonical page
- /engines/isuzu-bu-4jj1t
- Last database update
- 2026-07-25
- Manufacturer files
- No datasheet linked yet
Need this engine?
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