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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
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
Oil capacity6.3 L
Coolant capacity11.4 L
Displacement2.2 L
Aspirationnaturally aspirated
Rated speed1800 rpm

Maintenance & consumables

for the Isuzu 4LE1NYGV-01
ItemSpecCapacityPart #Interval
Air filter1000 hr find
Fuel filterwith replaceable element8944015310500 hr buy
Oil filterfull flow, spin on type58761000801000 hr buy
Belt1000 hr find
Coolant1000 hr
Oil500 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 is the oil capacity of the Magnum MLG 20?

The Isuzu 4LE1NYGV-01 engine in the Magnum MLG 20 has an oil capacity of 6.3 liters.

Parts

28
Part #DescriptionQtySystem
00087Engine fan belt guardBelt buy
00130Fine Voltage Adjustment Screw1Fine voltage adjustment screw buy
00174Engine exhaust system componentsSeal buy
002823aGrease1Grease buy
002824aOil1Oil buy
002825aOil1Oil buy
100AEquipment Outlet Main Circuit BreakerCircuit breaker dieselpartscenter $2.44
12398Receptacle Panel (2x5-20R, 2xL6-30R, 2x50A)Receptacle panel dieselpartscenter $6.83
285PSL5260Generator Model 285PSL52601Generator buy
PE4024HF285Engine Model PE4024HF2851Engine buy
00305OPERATING MANUAL1Service part / kit buy
01203Combination Light Tower Generator & Water TrailerService part / kit buy
12142Decal, GroundService part / kit buy
1NYGV-03GService part / kit buy
22870Decal, Caution for 480V CSAService part / kit buy
23827Decal, Controller SwitchesService part / kit buy
23846Decal, Controller Start InstructionsService part / kit buy
24942Decal, Patented 7,642,665,B2Service part / kit buy
26286Decal, Hood ServiceService part / kit FridayParts $229.95
26386Decal, Pinch PointService part / kit buy
26387Decal Set, Rear Hood LatchService part / kit buy
27733Decal, Interior Light Switch OptionService part / kit buy
30093Decal, 4 Pos Phase Switch Option Not for use when generator is operated at 480 volts.Service part / kit buy
30175Decal, UN31A tank caution Located on tank.Service part / kit FridayParts $85.00
30496Decal, 3 Pos Phase Switch Located on Manual Holder.Service part / kit buy
34275Decal, Caution - 120V & 240V OutletsService part / kit buy
34424WASHERService part / kit buy
34425Decal, Terminal Connections - 600VService part / kit buy

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 sheetOperator's manualService manual