Specifications
| Fuel | Natural Gas or L.P. Vapor |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 40 kW |
| Standby kVA | 40 |
| Prime power | 33 kW |
| Emissions | EPA Certified |
| Controller | H-100 |
| Oil capacity | 5.7 L |
| Alternator | 390 (4-pole, Class H insulation) |
| Voltage options | 120/240 V, 120/208 V |
| Phase | 1-phase |
| Rated current | 167 A |
| Power factor | 1.0 |
| Circuit breaker | 154 A |
| Battery group | See Battery Index 0161970SBY |
| Battery cranking | 525 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 11.36 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 1930×950×1176 mm |
| Dry weight | 714 kg |
| Tank runtime | N/A hr |
Engine
| Oil capacity | 5.7 L |
|---|---|
| Coolant capacity | 11.36 L |
| Displacement | 5.4 L |
| Aspiration | Naturally Aspirated |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Generac 5.4L| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | Full flow spin-on cartridge | — | |||
| Coolant | Pressurized Closed | — | |||
| Oil | 6.0 Quarts | — |
Common questions
How many kW is the Generac SG040?
The Generac SG040 is rated 40 kW standby (40.0 kVA).
What engine is in the Generac SG040?
The Generac SG040 is powered by the Generac 5.4L engine.
What kind of fuel does the Generac SG040 run on?
The Generac SG040 runs on Natural Gas or L.P. Vapor.
What's the oil capacity on a Generac SG040?
The Generac 5.4L engine in the Generac SG040 has an oil capacity of 5.7 liters.
What alternator comes on the Generac SG040?
The Generac SG040 uses a 390 alternator. It has 4 poles. Insulation class H.
Parts
3| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 005632-0 | Cold Weather Kit | Service part / kit | Amazon eBay | |
| 006204-0 | Extreme Cold Weather Kit | Service part / kit | Amazon eBay | |
| 006205-0 | Scheduled Maintenance Kit | Service part / kit | Amazon eBay $99.99 |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Standby | 752.0 | 21.3 | |
| Standby | 25% | 263.0 | 7.5 |
| Standby | 50% | 451.0 | 12.8 |
| Standby | 75% | 609.0 | 17.2 |
| Standby | 100% | 752.0 | 21.3 |
Available documents
Spec sheet — 0k4266-b-sg040-5-4l-60hz (Generac)Spec sheet — Generac 40kW SG040 Gas Generator 5.4L (Generac)Reference — 0169120SBY (Generac)Reference — 0175890SBY (Generac)Reference — 0193700SBY (Generac)