Specifications
| Fuel | NG/LP |
|---|---|
| Frequency | 50.0 Hz |
| Standby power | 360 kW |
| Standby kVA | 450 |
| Prime power | 288 kW |
| Emissions | EPA Certified: Mobile and Stationary Non-Emergency |
| Controller | Motortech All-In-One digital |
| Oil capacity | 31.0 L |
| Alternator | Leroy-Somer LSA 47.2 S4 (4-pole, Class H insulation) |
| Voltage options | 440/231 V, 400/220 V |
| Phase | 3-phase |
| Rated current | [541, 520] A |
| Power factor | 0.8 |
| Circuit breaker | 600 A |
| Battery group | 8D |
| Battery cranking | 1450 CCA |
| Battery voltage | 12V V |
| Battery quantity | 2 |
| Coolant capacity | 127 L |
| Max ambient | 40 °C |
| Dimensions (L×W×H) | 5180×1830×2570 mm |
| Dry weight | 5493 kg |
| Sound level | 84.0 dBA @ 7 m |
| Fuel tank | 87.0 L |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Inspect coalescing filter | — | 1500 hr | find | |
| Fuel filter | Inspect fuel and radiator hoses | — | 1500 hr | find | |
| Oil filter | Replace oil filters (engine and by-pass) | — | 1500 hr | find | |
| Belt | Inspect and tension belts* | — | 1500 hr | find | |
| Coolant | Inspect coolant | — | 1500 hr | ||
| Oil | lightweight oil | — | 1500 hr |
Common questions
What is the power rating of the Generac MGG450?
The Generac MGG450 is rated 360 kW standby (450.0 kVA).
What fuel does the Generac MGG450 use?
The Generac MGG450 runs on NG/LP.
What alternator does the Generac MGG450 use?
The Generac MGG450 uses a Leroy-Somer LSA 47.2 S4 alternator. It has 4 poles. Insulation class H.
Troubleshooting
9Fault codes
| Code | Meaning |
|---|---|
| 000107 | WARNING Hearing Loss |
| 000111 | WARNING Vision Loss |
| 000108 | WARNING Moving Parts |
| 000209b | WARNING Hot Surfaces |
| 000105 | DANGER Explosion and Fire |
| 000231a | WARNING (000231a) |
| 000234a | WARNING Crushing hazard |
| 000235 | WARNING Property or Equipment Damage |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Engine cranks but will not start | No fuel. | Verify |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
40| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 0C2655 | Gasket, M8 hinge | 2 | Gasket | PartsGeek |
| 004786 | NT-converter module | Service part / kit | PartsGeek | |
| 0A5991 | Screw, M8-1.25 x 20 pan head Phillips | 4 | Service part / kit | PartsGeek |
| 0C2454 | Screw, M6-1.00 x 16 hex | 12 | Service part / kit | PartsGeek |
| 0C3595B | Assembly, hinge LH bottom | 2 | Service part / kit | PartsGeek |
| 0D8962 | Stud, M6-1.00 x 15 - steel | 4 | Service part / kit | PartsGeek |
| 0D8962S | Stud, M6-1.00 x 15 - SS | 4 | Service part / kit | PartsGeek |
| 0H4907DG | Foam, door | 1 | Service part / kit | PartsGeek |
| 0L05250AL05 | Baffle, door | 1 | Service part / kit | PartsGeek |
| 0L05260AL05 | Weldment, roof - rear | 1 | Service part / kit | PartsGeek |
| 0L05270AL05 | Weldment, roof - center | 1 | Service part / kit | PartsGeek |
| 0L05280AL05 | Weldment, roof - front | 1 | Service part / kit | PartsGeek |
| 0L05300AL05 | Panel, radiator block off - LH | 1 | Service part / kit | PartsGeek |
| 0L05310AL05 | Panel, radiator block off - RH | 1 | Service part / kit | PartsGeek |
| 0L05320AL05 | Panel, radiator block off | 2 | Service part / kit | PartsGeek |
| 0L05830AL05 | Door, louvered - RH | 1 | Service part / kit | PartsGeek |
| 0L05850ST03 | Plate, mounting, corner - front | 2 | Service part / kit | PartsGeek |
| 0L05880ST03 | Plate, mounting, single door | 1 | Service part / kit | PartsGeek |
| 0L0591 | Hoist, lift | 3 | Service part / kit | PartsGeek |
| 0L06040ST03 | Plate, mounting - door hinge | 2 | Service part / kit | PartsGeek |
| 0L11770AL05 | Duct, exhaust front - bottom | 1 | Service part / kit | PartsGeek |
| 0L14650AL05 | Liner, door louvered | 1 | Service part / kit | PartsGeek |
| 0L14720AL05 | Liner, front panel - center | 1 | Service part / kit | PartsGeek |
| 0L1529 | Lock, rotary | 2 | Service part / kit | PartsGeek |
| 0L1530 | Handle, door - paddle with lock | 2 | Service part / kit | PartsGeek |
| 0L1664 | Rod, door latch connecting | 2 | Service part / kit | PartsGeek |
| 0L1726 | Clip, door connecting rod | 2 | Service part / kit | PartsGeek |
| 0L1982 | Door stop | 1 | Service part / kit | PartsGeek |
| 0L20160AL05 | Brace, rear door window | 1 | Service part / kit | PartsGeek |
| 0L20780ST03 | Plate, mounting exhaust duct - side | 2 | Service part / kit | PartsGeek |
| 0L5448 | 1,500 Hour Service Interval Manual | Service part / kit | PartsGeek | |
| G022097 | Washer, m6-.250 split lock | 4 | Service part / kit | PartsGeek |
| G022145 | Washer, M8-5/16 flat | 80 | Service part / kit | PartsGeek |
| G022147 | Screw, 5/16 - M8 hex | 40 | Service part / kit | PartsGeek |
| G022473 | Washer, .250 flat | 4 | Service part / kit | PartsGeek |
| G043107 | Screw, .500M x .125 F - brass | 36 | Service part / kit | PartsGeek |
| G049813 | Nut, M8-1.00 hex, G8.0 | 4 | Service part / kit | PartsGeek |
| G052857 | Nut, M6-1.00 nylock | 8 | Service part / kit | PartsGeek |
| G087233 | Rivet, pop .1875 x .450 - SS | 26 | Service part / kit | PartsGeek |
| HB6058A16 | Holder, manual | 1 | Service part / kit | PartsGeek |
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 |
|---|---|---|---|
| Continuous | 25% | ||
| Continuous | 50% | ||
| Continuous | 75% | ||
| Continuous | 100% | ||
| Prime | 25% | ||
| Prime | 50% | ||
| Prime | 75% | ||
| Prime | 100% |
Available documents
Spec sheet — mgg450-gaseous-generator ss (Generac)Owner's manual — 0L6724 (Generac)Parts manual — MGG450 (Parts) [8-2022] (Generac)