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Kohler 300REOZJ Generator Set

The Kohler 300REOZJ is a 300 kW (375 kVA) Diesel standby generator set powered by a John Deere 6090HFG86 engine. It is available at 120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 240/416 V, 277/480 V and 347/600 V, 3-phase and 60 Hz. It holds about 33.4 L (8.8 gal) of oil and 36 L (9.5 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 2 batteries rated 950 CCA at 12 V. The set measures 3100×1300×1689 mm (122.0×51.2×66.5 in) and weighs about 2449 kg (5399 lb). The same 6090HFG86 engine also powers generator sets from AKSA and MTU.

300 kW
Standby
9.0 L
Displacement
33.4 L
Oil capacity
6
Document types

How to read your Kohler serial & model number →

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power300 kW
Standby kVA375
EmissionsTier 3
ControllerAPM402, Decision-Maker 3000, Decision-Maker 550
Oil capacity33.4 L
Voltage options120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 240/416 V, 277/480 V, 347/600 V
Phase3
Power factor0.8
Battery cranking950 CCA
Battery voltage12 V
Battery quantity2
Coolant capacity36 L
Max ambient50 °C
Dimensions (L×W×H)3100×1300×1689 mm
Dry weight2449 kg

Engine

John Deere 6090HFG86
Oil capacity31.0 L
Coolant capacity16.0 L
Displacement9.0 L
AspirationTurbocharged, Charge Air-Cooled
Rated speed1800 rpm

Maintenance & consumables

for the John Deere 6090HFG86
ItemSpecCapacityPart #Interval
Air filterAir Cleaner Dry find
Fuel filter8694770002 buy
Fuel filterSecondaryGM50263 Amazon eBay $99.99
Oil filterGM48731 Amazon eBay $25.24
BeltRadiator - Unit Mounted, Blower Fan and Fan Drive find
CoolantSystem Coolant Capacity: L (gal) 53.5 (14.13)53.5 L
OilTotal Oil System: L (gal) 31 (8.19)31.0 L

Compatible filters for the John Deere 6090HFG86 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: John Deere RE587794 John Deere 4S00686R John Deere AH115833 John Deere F071151 John Deere F071150

Common questions

What is the power rating of the Kohler 300REOZJ?

The Kohler 300REOZJ is rated 300 kW standby (375.0 kVA).

What engine does the Kohler 300REOZJ use?

The Kohler 300REOZJ is powered by the John Deere 6090HFG86 engine.

What fuel does the Kohler 300REOZJ use?

The Kohler 300REOZJ runs on Diesel.

What is the oil capacity of the Kohler 300REOZJ?

The John Deere 6090HFG86 engine in the Kohler 300REOZJ has an oil capacity of 31.0 liters.

Parts

1
Part #DescriptionQtySystem
PA-354809Exhaust Silencer, CriticalService part / kit Amazon eBay

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
Standby25%26.37.0
Standby50%49.713.1
Standby75%67.717.9
Standby100%84.122.2

Available documents

BrochureSpec sheetReferenceService manualWiring diagramwiring_diagrams