Cummins INDUSTRIAL ENGINES
DiscontinuedCummins QSB6.7-G4
QSB6.7 Series
The Cummins QSB6.7-G4 is a 6.7-litre inline-6 diesel engine for generator sets, rated at 225 kVA / 180 kWe standby power at 1,500 RPM (50 Hz). It is a liquid-cooled engine built in China.
Standby Power
225 kVA
Electrical Output
180 kWe
Cylinders / Config
L6
Displacement
6.7 L
Rated Speed
1,500 RPM
ISO 8528 Power Ratings
Power Factor: 0.8 pfkWm = mechanical engine shaft power · kWe = electrical output · kVA = apparent electrical power.
| Operating Duty | kWm (Mechanical) | kWe (Electrical) | kVA (Rating) |
|---|---|---|---|
| Prime | 160 | 144 | 180 |
| Standby | 200 | 180 | 225 |
Mechanical & Electrical Specifications
| Brand | Cummins |
| Model | QSB6.7-G4 |
| Series | QSB6.7 Series |
| Configuration | L6 |
| Cylinders | 6 |
| Displacement | 6.7 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | China National Stage III / Unregulated |
| Country of Origin | China |
| Year Discontinued | 2026 |
Frequently Asked Questions
What is the power output of the Cummins QSB6.7-G4?
The Cummins QSB6.7-G4 is rated at 225 kVA standby / 180 kVA prime at 50 Hz (1,500 rpm).
Does the QSB6.7-G4 run at 50 Hz or 60 Hz?
The Cummins QSB6.7-G4 is rated for 50 Hz (1,500 rpm).
What fuel does the Cummins QSB6.7-G4 use?
The Cummins QSB6.7-G4 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the QSB6.7-G4?
The Cummins QSB6.7-G4 is an inline-6 (6-cylinder) engine with a displacement of 6.7 L.
Is the QSB6.7-G4 still in production?
No — the Cummins QSB6.7-G4 is discontinued (production ended around 2026). Its specifications and datasheets remain archived here for reference.
Is a datasheet available for the QSB6.7-G4?
Yes — an official Cummins datasheet for the Cummins QSB6.7-G4 can be downloaded from this page.