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Kohler 100REOZJ Generator Set

The Kohler 100REOZJ is a 100 kW (125 kVA) diesel standby generator set powered by a John Deere 4045HF285I engine. It is available at 120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 277/480 V and 347/600 V, 3-phase, 60 Hz and rated 347 A. It holds about 15.6 L (4.1 gal) of oil and 20.1 L (5.3 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 1 battery rated 640 CCA at 12 V. The set measures 2334×864×1210 mm (91.9×34.0×47.6 in) and weighs about 1234 kg (2721 lb). An integrated tank holds 257 L (67.9 gal), roughly 24 hours of runtime.

100 kW
Standby
4.5 L
Displacement
15.6 L
Oil capacity
9
Document types

How to read your Kohler serial & model number →

Specifications

Fueldiesel
Frequency60.0 Hz
Standby power100 kW
Standby kVA125
Prime power90 kW
EmissionsTier 3 EPA-Certified
ControllerAPM402, APM603, Decision-Maker 3000, Decision-Maker 550, Decision-Maker 6000
Oil capacity15.6 L
AlternatorKohler 4R12X
Voltage options120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 277/480 V, 347/600 V
Phase3
Rated current347 A
Power factor0.8
Circuit breaker30 A
Battery cranking640 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity20.1 L
Max ambient50 °C
Dimensions (L×W×H)2334×864×1210 mm
Dry weight1234 kg
Fuel tank215.0 L
Tank runtime24 hr

Engine

John Deere 4045HF285I
Oil capacity15.6 L
Coolant capacity20.1 L
Displacement4.5 L
AspirationTurbocharged, Charge Air-Cooled
Rated speed1800 rpm

Maintenance & consumables

for the John Deere 4045HF285I
ItemSpecCapacityPart #Interval
Air filter135L/s [286cfm] find
Fuel filter25.4L/h [6.7gal/hr] find
Fuel filterPrimaryGM50074 Amazon eBay $70.33 PartsGeek
Fuel filterSecondaryGM50006 Amazon eBay $35.39 PartsGeek
Oil filter×1GM32809 Amazon eBay $42.50 PartsGeek
BeltGM77161 Amazon eBay PartsGeek
Coolant8.5
Coolant filter find
Oil13.5L [3.6gal]15.6 L

Compatible filters for the John Deere 4045HF285I — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: John Deere AL204809 John Deere AT390262 John Deere AT390261 John Deere AL119839 John Deere AL150285

Common questions

What is the power rating of the Kohler 100REOZJ?

The Kohler 100REOZJ is rated 100 kW standby (125.0 kVA).

What engine does the Kohler 100REOZJ use?

The Kohler 100REOZJ is powered by the John Deere 4045HF285I engine.

What fuel does the Kohler 100REOZJ use?

The Kohler 100REOZJ runs on diesel.

What is the oil capacity of the Kohler 100REOZJ?

The John Deere 4045HF285I engine in the Kohler 100REOZJ has an oil capacity of 15.6 liters.

What alternator does the Kohler 100REOZJ use?

The Kohler 100REOZJ uses a Kohler 4R12X alternator.

Parts

2
Part #DescriptionQtySystem
223673Filter, oil1Oil filter Amazon eBay $6.28 PartsGeek
GM32386-KP1Exhaust Silencer, HospitalService 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%7.62.0
Prime50%14.43.8
Prime75%22.76.0
Prime100%27.67.3
Standby31.08.2
Standby25%9.52.5
Standby50%17.84.7
Standby75%25.06.6
Standby100%31.08.2

Available documents

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