Service parts for the MLG 20
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredBelts
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 20 kW |
| Standby kVA | 20 |
| Prime power | 19 kW |
| Emissions | 4i |
| Controller | N/A |
| Oil capacity | 6.7 L |
| Alternator | Marathon 334CSA3028 |
| Voltage options | 120 V, 240 V |
| Phase | 1Ø |
| Rated current | 79 A |
| Power factor | 1 |
| Circuit breaker | 100 A |
| Battery group | Group 24 |
| Battery cranking | 720 CCA |
| Battery voltage | 12V V |
| Battery quantity | 1 |
| Coolant capacity | 11.6 L |
| Max ambient | N/A °C |
| Dimensions (L×W×H) | 276×172×142 mm |
| Dry weight | 660 kg |
| Sound level | 68.0 dBA @ 23 m |
| Fuel tank | 212.0 L |
| Tank runtime | 31 hr |
Engine
| Oil capacity | 3.5 L |
|---|---|
| Coolant capacity | 4.5 L |
| Displacement | 2.2 L |
| Aspiration | N/A |
| Rated speed | 1800 rpm |
Same engine, other brands
1 brandThe Isuzu 4LE1NYGV-03 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 |
|---|---|
| Generac | MLT4200 |
Maintenance & consumables
for the Isuzu 4LE1NYGV-03| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Filter, air - metallic | 12969 | Amazon eBay | ||
| Fuel filter | with replaceable element | 8944015310 | 500 hr | Amazon eBay $86.33 NAPA $16.78 | |
| Oil filter | full flow, spin on type | 5876100080 | 1000 hr | Amazon eBay $16.89 PartsGeek $7.98 NAPA $14.75 | |
| Battery | Group 24 | ×1 | — | 500 hr | |
| Belt | Belt, fan | 22258 | Amazon eBay | ||
| Coolant | — | 1000 hr | |||
| Coolant filter | N/A | — | |||
| Oil | — | 500 hr | |||
| Spark plug | N/A | — | 1000 hr |
Common questions
What size generator is the Magnum MLG 20?
The Magnum MLG 20 is rated 20 kW standby (20.0 kVA).
Which engine powers the Magnum MLG 20?
The Magnum MLG 20 is powered by the Isuzu 4LE1NYGV-03 engine.
What fuel does the Magnum MLG 20 use?
The Magnum MLG 20 runs on Diesel.
What is the oil capacity of the Magnum MLG 20?
The Isuzu 4LE1NYGV-03 engine in the Magnum MLG 20 has an oil capacity of 3.5 liters.
What is the cooling system capacity of the Magnum MLG 20?
The Magnum MLG 20 cooling system holds 11.6 liters (3.1 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the prime power rating of the Magnum MLG 20?
The Magnum MLG 20 is rated 19 kW prime (19 kVA), against 20 kW standby.
What is the sound level of the Magnum MLG 20?
The Magnum MLG 20 is rated at 68.0 dBA at 23 m, per the manufacturer specification sheet.
How much does the Magnum MLG 20 weigh?
The Magnum MLG 20 has a dry weight of 660 kg (1455 lb).
What size fuel tank does the Magnum MLG 20 have?
The Magnum MLG 20 has a 212 liter (56 US gallon) fuel tank, giving about 31 hours of runtime.
What voltage does the Magnum MLG 20 produce?
The Magnum MLG 20 is offered in 120 V, 240 V, 1Ø-phase.
What battery does the Magnum MLG 20 use?
The Magnum MLG 20 uses 1 battery, 12V V each, 720 CCA, group Group 24, per the manufacturer specification sheet.
What alternator comes on the Magnum MLG 20?
The Magnum MLG 20 uses a Marathon 334CSA3028 alternator.
What oil filter does the Magnum MLG 20 use?
The Magnum MLG 20 uses oil filter part number 5876100080.
Which fuel filter part number does the Magnum MLG 20 take?
The Magnum MLG 20 uses fuel filter part number 8944015310.
Which air filter part number does the Magnum MLG 20 take?
The Magnum MLG 20 uses air filter part number 12969.
Parts
32| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 100A | Alternator | 2.25 | Alternator | Amazon eBay $100.99 FridayParts $16.28 SinoCMP $199.00 |
| 12398 | Receptacle Panel (2x5-20R, 2xL6-30R, 2x50A) | Receptacle panel | Amazon eBay $114.95 | |
| 12969 | Condenser (magneto) | 1 | Air filter | Amazon eBay |
| 12973 | Element, air filter | 1 | Air filter | Amazon eBay |
| 13378 | Gasket, silicone | 2 | Gasket | Amazon eBay |
| 15006 | Cable, .188 in. x 27 ft. w/ball swedge | 1 | Cable | Amazon eBay FridayParts $629.99 |
| 15183 | Filter, oil - Isuzu | 1 | Oil filter | Amazon eBay |
| 15331 | Fuel filter element | 1 | Fuel filter | Amazon eBay |
| 15612 | Cable, 16-7 cold mast drape | 1 | Hose | Amazon eBay |
| 22258 | Belt, fan | 1 | Belt | Amazon eBay |
| 26049 | Alternator, Isuzu | 1 | Alternator | Amazon eBay |
| 285PSL5260 | Generator Model 285PSL5260 | 1 | Generator | Amazon eBay |
| 50018 | Hose, fuel - .312 ID, 50 psi, SAE 30R7 | 3 | Hose | Amazon eBay |
| PE4024HF285 | Engine Model PE4024HF285 | 1 | Engine | Amazon eBay |
| 12142 | Decal, ground | 1 | Service part / kit | Amazon eBay NAPA $74.66 |
| 13370 | Assembly, tether | 1 | Service part / kit | Amazon eBay FridayParts $99.99 |
| 13660 | Radiator, 20kW wide | 1 | Service part / kit | Amazon eBay |
| 14262 | Sheave, 3 in. | 2 | Service part / kit | Amazon eBay |
| 15002 | Clamp, cable - .188 | 2 | Service part / kit | Amazon eBay |
| 15003 | Thimble, cable | 1 | Service part / kit | Amazon eBay |
| 16600 | Winch, manual | 1 | Service part / kit | Amazon eBay FridayParts $199.89 |
| 19258 | VALVE LAPPER | 1 | Service part / kit | Amazon eBay |
| 22419B | Bracket, overflow jug .5 gal-black | 1 | Service part / kit | Amazon eBay |
| 24942 | Decal, Patented 7,642,665,B2 | Service part / kit | Amazon eBay | |
| 26286 | Decal, Hood Service | 1 | Service part / kit | Amazon eBay FridayParts $229.95 |
| 26386 | Decal, Pinch Point | 1 | Service part / kit | Amazon eBay NAPA $45.89 |
| 26387 | Decal Set, Rear Hood Latch | 1 | Service part / kit | Amazon eBay FridayParts $18.23 |
| 30093 | GSC Alarm Status | Service part / kit | Amazon eBay | |
| 30175 | Decal, UN31A tank caution | 1 | Service part / kit | Amazon eBay NAPA $12.21 FridayParts $85.00 |
| 34275 | Decal, Caution - 120V & 240V Outlets | 1 | Service part / kit | Amazon eBay |
| 34424 | Decal Set, Voltage Selector Switch NEUTRAL BONDED TO FRAME | 1 | Service part / kit | Amazon eBay |
| 34425 | Decal, Terminal Connections - 600V | 1 | Service part / kit | Amazon eBay |
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 |
|---|---|---|---|
| Prime | 50% | 3.41 | 0.9 |
| Prime | 75% | 5.11 | 1.35 |
| Prime | 100% | 6.81 | 1.8 |
Available documents
This page was generated from the 3 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.