Cummins HSK78G Specs, Datasheet & Parts Support
HSK78G identifies the Cummins gas-engine family, not a single generator output. Use this page to review specifications and source documents, then identify the complete generator model before requesting parts or comparing a replacement package.
Production StatusIn Production
HSK78
- Configuration
- V12
- Displacement
- 78 L
- Fuel
- Natural Gas
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| Rating | Continuous |
|---|---|
| Electrical output kWe | 2,000 |
| Apparent power kVA | 2,500 |
Power ratings and source document
The HSK78G is an engine family used in 1,600, 1,800 and 2,000 kWe generator sets. The 2,000 kWe, 50 Hz value shown here corresponds to the C2000N5CD configuration and the source’s continuous (COP) duty definition. It is not a universal output for every HSK78G package.
Cummins lists N5CD configurations at 50 Hz with direct drive and N6CD configurations at 60 Hz with a gearbox. Do not infer engine speed from electrical frequency alone. Confirm the exact generator model and its data sheet.
Cummins NAS-6109-EN (02/19) · Source checked 2026-09-08
Datasheet & documents
Match the model number on your engine plate to the document. Check its revision date and the speed and duty listed for each power rating.
Technical specifications
Technical Specifications
| Brand | Cummins |
| Model | HSK78G |
| Series | HSK78 |
| Configuration | V12 |
| Cylinders | 12 |
| Displacement | 78 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Confirm exact configuration and manufacturer documentation |
| Country of Origin | United States |
Check your engine model
Other ways this model is written
Cummins HSK78GHSK 78Ghsk78g
Which HSK78G generator datasheet should you use?
Cummins lists C1600, C1800 and C2000 generator configurations. This record’s 2,000 kWe at 50 Hz refers to C2000N5CD and the continuous duty defined in NAS-6109-EN (02/19). Confirm the exact model, frequency, gas conditions and datasheet; do not apply this rating to every HSK78G installation.
Related guides
Cummins HSK78G parts and document enquiry
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HSK78G repair parts
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Frequently asked questions
What is the power output of the Cummins HSK78G?
The HSK78G is an engine family used in 1,600, 1,800 and 2,000 kWe generator sets. The 2,000 kWe, 50 Hz value shown here corresponds to the C2000N5CD configuration and the source’s continuous (COP) duty definition. It is not a universal output for every HSK78G package.
Does the HSK78G run at 50 Hz or 60 Hz?
Cummins lists N5CD configurations at 50 Hz with direct drive and N6CD configurations at 60 Hz with a gearbox. Do not infer engine speed from electrical frequency alone. Confirm the exact generator model and its data sheet.
What fuel does the Cummins HSK78G use?
The Cummins HSK78G is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the HSK78G?
The Cummins HSK78G is a V12 (12-cylinder) engine with a displacement of 78 L.
What is the catalog status of the Cummins HSK78G?
The Cummins HSK78G is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.
Are reference documents available for the HSK78G?
This page links reference documents for the Cummins HSK78G. Check each document's title, model coverage, revision and rating conditions before using it for selection.