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Kohler 90REOZT4 Generator Set

The Kohler 90REOZT4 is a 85 kW (106 kVA) Diesel standby generator set powered by a John Deere 4.5 L engine. It is available at 120/208 V, 120/240 V, 277/480 V and 347/600 V, Single/Three-phase and 60 Hz. It holds about 21 L (5.5 gal) of oil and 26.1 L (6.9 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 1 battery rated 450 CCA at 12 V. The set measures 2951×1119×2156 mm (116.2×44.1×84.9 in), weighs about 2542 kg (5604 lb) and produces 69 dBA at 7 m. An integrated tank holds 727 L (192.1 gal), roughly 24 hours of runtime.

85 kW
Standby
4.5 L
Displacement
21.0 L
Oil capacity
6
Document types

How to read your Kohler serial & model number →

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power85 kW
Standby kVA106
Prime power76 kW
EmissionsTier 4 Final
ControllerDecision-Maker 3500
Oil capacity21.0 L
Voltage options115 V, 200 V
PhaseSingle/Three
Circuit breaker400 A
Battery cranking450 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity26.1 L
Max ambient50 °C
Dimensions (L×W×H)2951×1119×2156 mm
Dry weight2542 kg
Sound level69.0 dBA @ 7 m
Fuel tank727.0 L
Tank runtime24 hr

Engine

John Deere 4.5 L
Displacement4.5 L

Maintenance & consumables

for the John Deere 4.5 L
ItemSpecCapacityPart #Interval
Fuel filterPrimary find
Oil filterCartridge×1 find
Oil500 hr

Compatible filters for the John Deere 4.5 L — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Fuel filter (primary): Kohler GM50006 Kohler 336661 Kohler GM48727 Kohler GM50074 John Deere AT274723
  • Oil filter: Kohler GM32809 Kohler 360031 John Deere RE519987 John Deere MIU800650 John Deere DZ118286

Common questions

What is the power rating of the Kohler 90REOZT4?

The Kohler 90REOZT4 is rated 85 kW standby (106.0 kVA).

What engine does the Kohler 90REOZT4 use?

The Kohler 90REOZT4 is powered by the John Deere 4.5 L engine.

What fuel does the Kohler 90REOZT4 use?

The Kohler 90REOZT4 runs on Diesel.

Parts

18
Part #DescriptionQtySystem
X--386--127Line, Flex Fuel1Hose buy
X--386--48Fuel line, flexible1Hose buy
X--426--9Clamp, hose, .25/.70 in.4Hose buy
100REOZJ4Stationary non-emergency gen-setsService part / kit buy
120REOZT4Mobile generator setsService part / kit buy
80REOZJ4Stationary non-emergency gen-setsService part / kit buy
90REOZT4Mobile generator setsService part / kit buy
GM103522--1Engine, 12V JD4045HFG1Service part / kit buy
GM103523--1Engine, 12V JD4045HFG1Service part / kit buy
GM94201--1Engine, 12V JD4045HFG1Service part / kit buy
GM94202--1Engine, 12V JD4045HFG1Service part / kit buy
GM94206Tube, Exhaust1Service part / kit buy
GM94207Tube, DPF To Decomp Tube1Service part / kit buy
GM94222Tube, Air Intake1Service part / kit buy
GM94228Tube, Exhaust1Service part / kit buy
GM94230Tube, Air Intake1Service part / kit buy
GM98896Tube, DPF To Decomp Tube1Service part / kit buy
X--672--7Clamp, insulated, .44 in.2Service 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
Prime1.50.4
Prime25%7.01.0
Prime50%18.54.9
Prime75%23.56.2
Prime100%22.15.8
Standby1.50.4
Standby25%7.41.9
Standby50%12.73.4
Standby75%18.24.8
Standby100%24.46.4

Available documents

BrochureSpec sheetReferenceOwner's manualParts manualService manual

Other sets with this engine