Facts About Generators
GeneratorsDirectoryEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Magnum›Magnum MLG 20

Magnum MLG 20 Generator Set

The Magnum MLG 20 is a 20 kW (20 kVA) diesel standby generator set powered by a Isuzu 4LE1NYGV-01 engine. It is available at 240 V, single-phase, 60 Hz and rated 79 A. It holds about 6.3 L (1.7 gal) of oil and 11 L (2.9 gal) of coolant, with a maximum ambient rating of 48.89 °C. Starting uses 1 group-24 battery rated 720 CCA at 12 V. The set measures 2667×1727×1422 mm (105.0×68.0×56.0 in), weighs about 660 kg (1455 lb) and produces 70 dBA at 7.01 m. An integrated tank holds 211.98 L (56.0 gal), roughly 31 hours of runtime. The same 4LE1NYGV-01 engine also powers generator sets from Generac.

20 kW
Standby
2.2 L
Displacement
6.3 L
Oil capacity
3
Document types

Specifications

Fueldiesel
Frequency60.0 Hz
Standby power20 kW
Standby kVA20
Prime power19 kW
EmissionsInterim Tier IV
Oil capacity6.3 L
AlternatorMarathon 334CSA3028
Voltage options240 V
Phasesingle
Rated current79 A
Power factor1.0
Circuit breaker100 A
Battery group24
Battery cranking720 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity11.0 L
Max ambient48.89 °C
Dimensions (L×W×H)2667×1727×1422 mm
Dry weight660 kg
Sound level70.0 dBA @ 7.01 m
Fuel tank211.98 L
Tank runtime31 hr

Engine

Isuzu 4LE1NYGV-01
Displacement2.2 L
Aspirationnaturally aspirated
Rated speed1800 rpm

Maintenance & consumables

for the Isuzu 4LE1NYGV-01
ItemSpecCapacityPart #Interval
Air filter—1000 hr find
Fuel filterwith replaceable element8944015310500 hr PartsGeek
Oil filterfull flow, spin on type58761000801000 hr PartsGeek $7.98
Belt—1000 hr find
Coolant—1000 hr
Oil—500 hr

Compatible filters for the Isuzu 4LE1NYGV-01 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: Isuzu 5864014350 Isuzu 8972599390 Donaldson P775687 Donaldson P821575 Donaldson P822858

Common questions

What is the power rating of the Magnum MLG 20?

The Magnum MLG 20 is rated 20 kW standby (20.0 kVA).

What engine does the Magnum MLG 20 use?

The Magnum MLG 20 is powered by the Isuzu 4LE1NYGV-01 engine.

What fuel does the Magnum MLG 20 use?

The Magnum MLG 20 runs on diesel.

What alternator does the Magnum MLG 20 use?

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.

What fuel filter does the Magnum MLG 20 use?

The Magnum MLG 20 uses fuel filter part number 8944015310.

What air filter does the Magnum MLG 20 use?

The Magnum MLG 20 uses air filter part numbers ISUZU 5864014350, ISUZU 8972599390.

Parts

46
Part #DescriptionQtySystem
00087Twist-Lock Receptacles1Receptacle PartsGeek
00130Fine Voltage Adjustment Screw1Fine voltage adjustment screw PartsGeek
00174Engine exhaust system componentsSeal PartsGeek
002823aGrease1Grease PartsGeek
002824aOil1Oil PartsGeek
002825aOil1Oil PartsGeek
100AAlternator2.25Alternator PartsGeek FridayParts $516.36
12398Receptacle Panel (2x5-20R, 2xL6-30R, 2x50A)Receptacle panel PartsGeek
12969Filter, air - metallic1Air filter PartsGeek
12973Element, air filter1Air filter PartsGeek
13378Gasket, silicone2Gasket PartsGeek
15006Cable, .188 in. x 27 ft. w/ball swedge1Cable PartsGeek FridayParts $629.99
15183Filter, oil - Isuzu1Oil filter PartsGeek
15331Fuel filter element1Fuel filter PartsGeek
15612Cable, 16-7 cold mast drape1Hose PartsGeek
22258Belt, fan1Belt PartsGeek
26049Alternator, Isuzu1Alternator PartsGeek
285PSL5260Generator Model 285PSL52601Generator PartsGeek
50018Hose, fuel - .312 ID, 50 psi, SAE 30R73Hose PartsGeek
PE4024HF285Engine Model PE4024HF2851Engine PartsGeek
00305OPERATING MANUAL1Service part / kit PartsGeek
01203Combination Light Tower Generator & Water TrailerService part / kit PartsGeek
12142DECAL, GROUND1Service part / kit PartsGeek
13370Assembly, tether1Service part / kit PartsGeek FridayParts $99.99
13660Radiator, 20kW wide1Service part / kit PartsGeek
14262Sheave, 3 in.2Service part / kit PartsGeek
15002Clamp, cable - .1882Service part / kit PartsGeek
15003Thimble, cable1Service part / kit PartsGeek
16600Winch, manual1Service part / kit PartsGeek FridayParts $199.89
19258VALVE LAPPER1Service part / kit PartsGeek
1NYGV-03GService part / kit PartsGeek
22419BBRACKET, Support1Service part / kit PartsGeek
22870Decal, Caution for 480V CSA1Service part / kit PartsGeek
23827Decal, Controller Switches1Service part / kit PartsGeek
23846Decal, Controller Instructions1Service part / kit PartsGeek
24942Decal, Patented 7,642,665,B2Service part / kit PartsGeek
26286Decal, Hood Service1Service part / kit PartsGeek FridayParts $229.95
26386Decal, Pinch Point1Service part / kit PartsGeek
26387Decal Set, Rear Hood Latch1Service part / kit PartsGeek
27733Decal, Interior Light Switch OptionService part / kit PartsGeek
30093GSC Alarm StatusService part / kit PartsGeek
30175Decal, UN31A tank caution Located on tank.1Service part / kit PartsGeek FridayParts $85.00
30496Decal, 3 Pos Phase Switch Located on Manual Holder.Service part / kit PartsGeek
34275Decal, Caution - 120V & 240V Outlets1Service part / kit PartsGeek
34424Decal Set, Voltage Selector Switch (x2)1Service part / kit PartsGeek
34425Decal, Terminal Connections - 600V1Service 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

RatingLoadL/hgal/h
Prime50%3.410.9
Prime75%5.111.35
Prime100%6.811.8

Available documents

Spec sheet — MLG20 Mobile (Magnum)Operator's manual — 48948 (Magnum)Service manual — 152 (Magnum)

Other sets with this engine

Generac MLG 25Magnum MTT25