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Kohler 120REOZT4 Generator Set

The Kohler 120REOZT4 is a 105 kW (131 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 45 °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 2660 kg (5864 lb) and produces 71 dBA at 7 m. An integrated tank holds 727 L (192.1 gal), roughly 24 hours of runtime.

105 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 power105 kW
Standby kVA131
Prime power96 kW
EmissionsTier 4 Final
ControllerDecision-Maker 3500
Oil capacity21.0 L
AlternatorKohler 4R12X
Voltage options115 V, 200 V
PhaseSingle/Three
Circuit breaker400 A
Battery cranking450 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity26.1 L
Max ambient45 °C
Dimensions (L×W×H)2951×1119×2156 mm
Dry weight2660 kg
Sound level71.0 dBA @ 7 m
Fuel tank727.0 L
Tank runtime24 hr

Engine

John Deere 4.5 L
Displacement4.5 L

Common questions

What is the power rating of the Kohler 120REOZT4?

The Kohler 120REOZT4 is rated 105 kW standby (131.0 kVA).

What engine does the Kohler 120REOZT4 use?

The Kohler 120REOZT4 is powered by the John Deere 4.5 L engine.

What fuel does the Kohler 120REOZT4 use?

The Kohler 120REOZT4 runs on Diesel.

What alternator does the Kohler 120REOZT4 use?

The Kohler 120REOZT4 uses a Kohler 4R12X alternator.

Parts

8
Part #DescriptionQtySystem
GM100703Element, Primary1Air filter Amazon eBay PartsGeek
GM100704Element, Safety1Air filter Amazon eBay PartsGeek
GM62396Hose, Reducer1Hose PartsGeek
GM94203Heavy Duty Air Cleaner1Air filter Amazon eBay PartsGeek
100REOZJ4Stationary non-emergency gen-setsService part / kit PartsGeek
120REOZT4Mobile generator setsService part / kit PartsGeek
80REOZJ4Stationary non-emergency gen-setsService part / kit PartsGeek
90REOZT4Mobile generator setsService 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
Prime3.20.8
Prime25%9.82.6
Prime50%18.54.9
Prime75%23.56.2
Prime100%28.07.4
Standby3.20.8
Standby25%10.42.7
Standby50%16.34.3
Standby75%22.96.0
Standby100%30.88.1

Available documents

Brochure — Diesel Mobile Expansion (Kohler)Brochure — GSA Product List (Kohler)Brochure — Mobile Rental Generators (Kohler)Spec sheet — g5417 (Kohler)Reference — FinalGSAPriceListEffective 3-20-2023 (Kohler)Reference — GSAPriceList (Kohler)Reference — KOHLEROwner's manual — tp6895 (Kohler)Parts manual — tp6894 (Kohler)Service manual — TP-6913 Rev 1018d (Kohler)

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