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Kohler 5M4280 Generator Set

The Kohler 5M4280 is a 950 kW (1188 kVA) Diesel standby generator set powered by a Mitsubishi S12H-Y2PTAW-1 engine. It is available at 240/416 V, 277/480 V and 347/600 V, 3-phase, 60 Hz and rated 1143 A. It holds about 180 L (47.6 gal) of oil and 100 L (26.4 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses 2 group-Two batteries rated 1150 CCA at 24 V. The set measures 5051×1931×2571 mm (198.9×76.0×101.2 in), weighs about 9798 kg (21601 lb) and produces 910 dBA at 1 m. An integrated tank holds 380 L (100.4 gal), roughly 600 hours of runtime. The same S12H-Y2PTAW-1 engine also powers generator sets from Generac, Rudox Power Generation and Simson-Maxwell.

950 kW
Standby
37.11 L
Displacement
180.0 L
Oil capacity
1
Document types

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Specifications

FuelDiesel
Frequency60.0 Hz
Standby power950 kW
Standby kVA1188
Prime power895 kW
EmissionsTier 2 EPA-Certified
ControllerAPM402
Oil capacity180.0 L
AlternatorKohler 5M4280
Voltage options240/416 V, 277/480 V, 347/600 V
Phase3
Rated current1143 A
Power factor0.8
Circuit breaker1143 A
Battery groupTwo
Battery cranking1150 CCA
Battery voltage24 V
Battery quantity2
Coolant capacity100 L
Max ambient40 °C
Dimensions (L×W×H)5051×1931×2571 mm
Dry weight9798 kg
Sound level910.0 dBA @ 1 m
Fuel tank380.0 L
Tank runtime600 hr

Engine

Mitsubishi S12H-Y2PTAW-1
Oil capacity200.0 L
Coolant capacity288.0 L
Displacement37.11 L
AspirationTurbocharged
Rated speed1800 rpm

Maintenance & consumables

for the Mitsubishi S12H-Y2PTAW-1
ItemSpecCapacityPart #Interval
Air filter find
Fuel filter10 (final filters)×4200 hr find
Oil filterCartridge×5GM13942 Amazon eBay $25.00 PartsGeek
BeltRubber-booted engine electrical connections200 hr find
CoolantCoolant76.3 gal200 hr
Coolant filterUV/Ozone resistant hoses12 hr find
OilEngine Oil200.0 qt200 hr

Common questions

What is the power rating of the Kohler 5M4280?

The Kohler 5M4280 is rated 950 kW standby (1188.0 kVA).

What engine does the Kohler 5M4280 use?

The Kohler 5M4280 is powered by the Mitsubishi S12H-Y2PTAW-1 engine.

What fuel does the Kohler 5M4280 use?

The Kohler 5M4280 runs on Diesel.

What is the oil capacity of the Kohler 5M4280?

The Mitsubishi S12H-Y2PTAW-1 engine in the Kohler 5M4280 has an oil capacity of 200.0 liters.

What alternator does the Kohler 5M4280 use?

The Kohler 5M4280 uses a Kohler 5M4280 alternator.

What oil filter does the Kohler 5M4280 use?

The Kohler 5M4280 uses oil filter part number GM13942.

Parts

16
Part #DescriptionQtySystem
0161970SBYBattery1Battery PartsGeek
01865Fuel/Water Filtering SystemFuel filter PartsGeek
18650Oil filter PartsGeek
01858Engine Oil RecommendationsService part / kit PartsGeek
01859Serial Number LocationsService part / kit PartsGeek
01860GFCI Receptacle and Interior Light TimerService part / kit PartsGeek
01861Component Locations - Left SideService part / kit PartsGeek
01862Component Locations - Right SideService part / kit PartsGeek
01863Control PanelService part / kit PartsGeek
01864Digital ControllerService part / kit PartsGeek
01866Parallel Setup and OperationService part / kit PartsGeek
01867Generator Output ConnectionsService part / kit PartsGeek
01868Voltage RegulatorService part / kit PartsGeek
01870A299X- 68-03 fos! 104 F1035-12045 25-01 | 29 5 | F1805-10020 68-01 fo5 19Service part / kit PartsGeek
01871Maintenance schedule and basic maintenance tasks for MCG1000MT2Service part / kit PartsGeek
01873Maintenance schedule and extended maintenance tasks for MCG1000MT2Service 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
Prime25%67.017.6
Prime50%129.034.1
Prime75%188.049.6
Prime100%242.064.0
Standby25%73.019.3
Standby50%141.0
Standby75%204.054.0
Standby100%263.069.4

Available documents

Spec sheet — Kohler-900REOZMD (Kohler)