Specifications
| Fuel | diesel |
|---|---|
| Frequency | 50.0 Hz |
| Standby power | 72 kW |
| Standby kVA | 90 |
| Prime power | 66 kW |
| Oil capacity | 12.1 L |
Engine
| Oil capacity | 12.1 L |
|---|---|
| Coolant capacity | 17.0 L |
| Displacement | 4.5 L |
| Aspiration | Direct injection |
| Rated speed | 1500 rpm |
Same engine, other brands
1 brandThe Cummins/Onan QSB5-G3 in this set also powers 1 generator set sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.
| Brand | Models |
|---|---|
| MQ Power | EGS500C3 |
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | — | ||||
| Oil | — | ||||
| Spark plug | — |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Service intervals
2| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| valve clearance | Check | 2000 hr | B-Series (4BT3.3): valve clearance checks not required for 2000 hours, twice the industry standard | |
| engine overhaul | Other | 20000 hr | QSK23-Series: expected life cycle to 20,000 hours before first overhaul |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
What is the power rating of the Cummins/Onan QSB5-G3?
The Cummins/Onan QSB5-G3 is rated 72 kW standby (90.0 kVA).
What engine is in the Cummins/Onan QSB5-G3?
The Cummins/Onan QSB5-G3 is powered by the Cummins/Onan QSB5-G3 engine.
Is the Cummins/Onan QSB5-G3 diesel or gas?
The Cummins/Onan QSB5-G3 runs on diesel.
How much oil does the Cummins/Onan QSB5-G3 take?
The Cummins/Onan QSB5-G3 engine in the Cummins/Onan QSB5-G3 has an oil capacity of 12.1 liters.
What is the coolant capacity of the Cummins/Onan QSB5-G3?
The Cummins/Onan QSB5-G3 cooling system holds 17 liters (4.5 US gallons) for the engine, per the manufacturer specification sheet.
What is the prime power rating of the Cummins/Onan QSB5-G3?
The Cummins/Onan QSB5-G3 is rated 66 kW prime (82 kVA), against 72 kW standby.
Parts
8model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 100-001 | Air Filter | 1 | Air filter | Amazon Amazon eBay eBay |
| 100-002 | Oil filter | 1 | Oil filter | Amazon eBay |
| 100-003 | Fuel filter | 1 | Fuel filter | Amazon eBay |
| 100-004 | Air Filter | 1 | Air filter | Amazon Amazon eBay |
| 100-005 | Air Filter Element | 1 | Air filter | Amazon Amazon eBay $8.98 eBay NAPA $34.86 |
| 100-006 | Spark Plug | 1 | Spark plug | Amazon eBay |
| 100-007 | Battery | 1 | Battery | Amazon eBay KuduParts $153.00 |
| 100-008 | Bolt (M12-1.75) | 1 | Bolt m12 1 75 | Amazon eBay |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
This page was generated from the 4 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.