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.
Overhaul & repair parts- Manufacturer files
- No datasheet
- Last updated
- 2026-07-25
- Package route
- diesel generator sets
- Mechanical Output
- 50 kW
- Cylinders
- L4
- Displacement
- 2.999 L
- Rated Speed
- 1,500 RPM
Ask about Isuzu BU-4JJ1T
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Isuzu BU-4JJ1T overhaul & repair parts
Already running a Isuzu BU-4JJ1T? Start with the parts you need, then send your nameplate so we can help check the right references for your engine.
Reviewed part-number references
A starting point for identification. Fitment must be confirmed before ordering.
- Oil filter8980188580
Cartridge, oil filter
Fitment check: The archived source and independent QA bind complete model BU-4JJ1T and printed part number 8980188580 in the cited bounded record. Private equipment-manufacturer evidence. Confirm complete engine serial/build, installed generator specification, and current Isuzu or Multiquip catalog before ordering. Source quantity and replacement implications were not imported.
Source: Multiquip DCA45USI2 60 Hz Generator Operation and Parts Manual, Rev. 1
- Fuel filter8981430410
Fuel filter element, main
Fitment check: The archived source and independent QA bind complete model BU-4JJ1T and printed part number 8981430410 in the cited bounded record. Private equipment-manufacturer evidence. Confirm complete engine serial/build, installed generator specification, and current Isuzu or Multiquip catalog before ordering. Source quantity and replacement implications were not imported.
Source: Multiquip DCA45USI2 60 Hz Generator Operation and Parts Manual, Rev. 1
- Air filter0602046365
Air element
Fitment check: The archived source and independent QA bind complete model BU-4JJ1T and printed part number 0602046365 in the cited bounded record. Private equipment-manufacturer evidence. Confirm complete engine serial/build, installed generator specification, and current Isuzu or Multiquip catalog before ordering. Source quantity and replacement implications were not imported.
Source: Multiquip DCA45USI2 60 Hz Generator Operation and Parts Manual, Rev. 1
Selected references only; this is not a complete overhaul list or a stock listing.
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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 information is listed for the BU-4JJ1T?
This record lists U.S. EPA Interim Tier 4 for the Isuzu BU-4JJ1T. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
What is the catalog status of the Isuzu BU-4JJ1T?
The Isuzu BU-4JJ1T is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.