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Kohler 1000REOZM Generator Set

The Kohler 1000REOZM is a 1010 kW (1263 kVA) Diesel standby generator set powered by a Mitsubishi S12H-Y1PTA-3 engine. It is available at 60 V, 3-phase, 60 Hz and rated 60 A. It holds about 200 L (52.8 gal) of oil and 60 L (15.9 gal) of coolant, with a maximum ambient rating of 40 °C. The set measures 5×2050×2228 mm (0.2×80.7×87.7 in) and weighs about 8800 kg (19401 lb).

1010 kW
Standby
37.11 L
Displacement
200.0 L
Oil capacity
3
Document types

How to read your Kohler serial & model number →

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power1010 kW
Standby kVA1263
Prime power920 kW
EmissionsTier 1
ControllerDecision-Maker 550
Oil capacity200.0 L
Alternator5M4044
Voltage options60 V, 277 V, 480 V, 50 V, 230 V, 400 V
Phase3
Rated current{'60Hz': 1918, '50Hz': 1674} A
Power factor0.8
Coolant capacity{'60Hz': 100, '50Hz': 260} L
Max ambient[40] °C
Dimensions (L×W×H)5×2050×2228 mm
Dry weight8800 kg

Engine

Mitsubishi S12H-Y1PTA-3
Oil capacity200.0 L
Coolant capacity288.0 L
Displacement37.11 L
AspirationTurbocharged
Rated speed1800 rpm

Maintenance & consumables

for the Mitsubishi S12H-Y1PTA-3
ItemSpecCapacityPart #Interval
Air filter— find
Fuel filter×4— find
Fuel filterSecondaryGM13947 Amazon eBay $79.99 PartsGeek
Oil filterCartridge×5GM13942 Amazon eBay $25.00 PartsGeek
BeltGM14526 Amazon eBay $39.80 PartsGeek
Coolant—
Oil200.0 L—

Common questions

What is the power rating of the Kohler 1000REOZM?

The Kohler 1000REOZM is rated 1010 kW standby (1263.0 kVA).

What engine does the Kohler 1000REOZM use?

The Kohler 1000REOZM is powered by the Mitsubishi S12H-Y1PTA-3 engine.

What fuel does the Kohler 1000REOZM use?

The Kohler 1000REOZM runs on Diesel.

What is the oil capacity of the Kohler 1000REOZM?

The Mitsubishi S12H-Y1PTA-3 engine in the Kohler 1000REOZM has an oil capacity of 200.0 liters.

What alternator does the Kohler 1000REOZM use?

The Kohler 1000REOZM uses a 5M4044 alternator.

Parts

26model family
Part #DescriptionQtySystem
GM13942Oil Filter4Oil filter Amazon eBay $25.00 PartsGeek
GM13943Oil Filter (bypass)1Oil filter Amazon eBay PartsGeek
GM13944Thermostat4Thermostat PartsGeek
GM13945Thermostat Gasket2Gasket PartsGeek
GM13946Tip assembly, nozzle12Injector PartsGeek
GM13947Fuel Filter4Fuel filter Amazon eBay $79.99 PartsGeek
GM13948V-Belt (alternator)1Belt Amazon eBay PartsGeek
GM13950Oil Filter (bypass)1Oil filter Amazon eBay $23.66 PartsGeek
GM13951Fuel Filter2Fuel filter Amazon eBay $59.00 PartsGeek
GM13952Fuel Filter4Fuel filter Amazon eBay PartsGeek
GM13953Thermostat2Thermostat PartsGeek
GM14525V-Belt (set of 4)1Belt Amazon eBay $94.95 PartsGeek
GM14526V-Belt (set of 4)1Belt Amazon eBay $39.80 PartsGeek
GM15752V-Belt1Belt Amazon eBay PartsGeek
GM15753V-Belt (alternator)1Belt Amazon eBay PartsGeek
GM15765Thermostat Gasket1Gasket PartsGeek
GM21122V-Belt1Belt Amazon eBay PartsGeek
GM21663Fuel Filter2Fuel filter Amazon eBay PartsGeek
GM21727Thermostat Gasket2Gasket PartsGeek
GM21733Tip assembly, nozzle16Injector PartsGeek
GM21917V-Belt (alternator)1Belt Amazon eBay PartsGeek
GM31390Thermostat4Thermostat PartsGeek
GM31436Tip assembly, nozzle6Injector PartsGeek
GM32057Oil Filter4Oil filter Amazon eBay PartsGeek
GM35977Tip assembly, nozzle12Injector PartsGeek
GM38852Oil Filter2Oil filter Amazon eBay PartsGeek

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime25%80.021.1
Prime50%137.036.2
Prime75%194.051.2
Prime100%256.067.6
Standby25%82.021.7
Standby50%147.038.9
Standby75%211.055.8
Standby100%283.074.9

Available documents

Spec sheet (Kohler)Spec sheet — 1000reozm gsd305 (Kohler)Parts manual — tp6057 (Kohler)Wiring diagram — tp6289 (Kohler)