Kohler 125REOZJ4 Specs (Power | Consumption)

The Kohler 125REOZJ4 generator is listed with standby output of 125 kW, Diesel fuel, 60 Hz operation, 4 available voltage configurations, Three phase, and sound level of 70 dBA @ 23 ft (7 m).

Kohler Generator Specifications

Generator • Diesel • 60 Hz • Three phase

Standby power: 125 kWVoltage options: 4 configurationsDry weight: 7,718 lb (3,501 kg)

Key specifications

125 kW Standby power

Diesel Fuel

4 configurations Voltage options

Three phase Phase

7,718 lb (3,501 kg) Dry weight

70 dBA @ 23 ft (7 m) Sound level

60 Hz Frequency

Useful generator charts

Charts are shown only when this model has enough usable source data.

Fuel consumption by load

How fuel use changes as generator load increases.

25% load

3 gal/hr

50% load

5.1 gal/hr

75% load

7.2 gal/hr

100% load

9.4 gal/hr

Estimated runtime by load

Calculated from the listed 243.8 gal fuel capacity and fuel-consumption data.

25% load

81.3 hr

50% load

47.8 hr

75% load

33.9 hr

100% load

25.9 hr

Power-to-weight

Standby output per 1,000 lb of dry weight versus similar-output Kohler models.

This model

16.2 kW

Peer average

29.1 kW

17th percentile

Power output

Low 99 kW High 125 kW

Standby

125 kW

Prime

99 kW

How the Kohler 125REOZJ4 compares

This compares the supplied numeric specification with Kohler generators in the same broad standby-power class where enough comparable data exists.

Standby power

125 kW

39% above avg

91st percentile

Dry weight

7,718 lb

106% above avg

88th percentile

Sound level

70 dBA

In line with avg

55th percentile

Oil capacity

4.12 gal

19% above avg

66th percentile

Standby power125 kW

Low 60 kWAverage 90 kWHigh 127 kW

About 39% above the similar-output Kohler average. Around the 91st percentile for this field.

Dry weight7,718 lb

Low 1,883 lbAverage 3,755 lbHigh 8,555 lb

About 106% above the similar-output Kohler average. Around the 88th percentile for this field.

Sound level70 dBA

Low 61 dBAAverage 69.1 dBAHigh 75 dBA

Very close to the similar-output Kohler average. Around the 55th percentile for this field.

Oil capacity4.12 gal

Low 1.24 galAverage 3.45 galHigh 7.29 gal

About 19% above the similar-output Kohler average. Around the 66th percentile for this field.

This model Peer average

Generator information

Manufacturer	Kohler
Model	125REOZJ4
Generator type	Generator
Fuel	Diesel
Frequency	60 Hz

Electrical output

Standby power	125 kW
Prime power	99 kW
Standby kVA	163.0
Voltage options	120/208 V, 120/240 V, 277/480 V, 347/600 V
Phase	Three phase
Power factor	0.8
Circuit breaker	600 A

Engine, cooling and controls

Engine model	John Deere 6068HFG08
Engine displacement	415 cu in (6.8 L)
Aspiration / cooling	Turbocharged, Charge Air Cooled
Rated engine speed	1800 rpm
Engine oil capacity	4.12 gal (15.6 L)
Engine coolant capacity	9.4 gal (35.6 L)
Oil capacity	4.12 gal (15.6 L)
Coolant capacity	9.4 gal (35.6 L)
Maximum ambient	122 °F (50 °C)
Controller	Decision-Maker 3500
Alternator	Kohler 4R13X
Emissions	Tier 4 Final

Physical specifications

Dry weight	7, 718 lb (3, 501 kg)
Dimensions (L × W × H)	139 × 46.9 × 89.6 in (3531 × 1191 × 2276 mm)
Sound level	70 dBA @ 23 ft (7 m)

Battery

Battery cranking	400 CCA
Battery voltage	12 V
Battery quantity	2

Fuel system and runtime

Fuel tank	243.8 gal (923 L)
Tank runtime	24 hr

Fuel consumption

Standby	3.0 gal/h (11.3 L/h) @ 25%; 5.1 gal/h (19.3 L/h) @ 50%; 7.2 gal/h (27.2 L/h) @ 75%; 9.4 gal/h (34.0 L/h) @ 100%
Prime	2.8 gal/h (10.6 L/h) @ 25%; 4.7 gal/h (17.8 L/h) @ 50%; 6.6 gal/h (25.0 L/h) @ 75%; 8.6 gal/h (32.5 L/h) @ 100%

Maintenance and service parts

Oil filter	Specification: Cartridge; Capacity: ×1
Fuel filter	Specification: Primary

Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Kohler North America generator website.