Cummins
Cummins B3.9CS4GT1
B Series
Cummins B3.9CS4GT1 generator-drive diesel engine discovered in the GenProBase public selector. GenProBase lists 1 row(s) across 50Hz with 3.9 L displacement, 4L cylinders, liquid-cooled cooling, and China IV emissions labeling. Treat this row as source-discovered and prioritize OEM datasheet attachment in a follow-up pass.
Overhaul & repair parts- Manufacturer files
- No datasheet
- Last updated
- 2026-08-05
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 75 kVA
- Electrical Output
- 60 kWe
- Cylinders
- L4
- Displacement
- 3.9 L
- Rated Speed
- 1,500 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 75 | 60 | — |
| Standby Power | 83 | 60 | — |
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Cummins B3.9CS4GT1 overhaul & repair parts
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Cummins B3.9CS4GT1 generator set context
The Cummins B3.9CS4GT1 is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 75 kVA / 60 kWe / 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 | Cummins |
| Model | B3.9CS4GT1 |
| Series | B Series |
| Configuration | L4, turbocharged aftercooled |
| Cylinders | 4 |
| Displacement | 3.9 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | China IV |
| Certifications | China IV |
| Country of Origin | China |
Frequently asked questions
What is the power output of the Cummins B3.9CS4GT1?
The Cummins B3.9CS4GT1 is rated at 75 kVA standby / 75 kVA prime at 50 Hz (1,500 rpm).
Does the B3.9CS4GT1 run at 50 Hz or 60 Hz?
The Cummins B3.9CS4GT1 is rated for 50 Hz (1,500 rpm).
What fuel does the Cummins B3.9CS4GT1 use?
The Cummins B3.9CS4GT1 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the B3.9CS4GT1?
The Cummins B3.9CS4GT1 is an inline-4 (4-cylinder) engine with a displacement of 3.9 L.
What emissions information is listed for the B3.9CS4GT1?
This record lists China IV for the Cummins B3.9CS4GT1. 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 Cummins B3.9CS4GT1?
The Cummins B3.9CS4GT1 is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.