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Kohler KG125 Generator Set

The Kohler KG125 is a 125 kW (91 kVA) L.P./N.G. standby generator set powered by a Kohler KG6208THD 6.2L engine. It is available at 120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V and 277/480 V, 3-phase, 60 Hz and rated 417 A. It holds about 9 L (2.4 gal) of oil and 28.4 L (7.5 gal) of coolant, with a maximum ambient rating of 45 °C. Starting uses 1 battery rated 650 CCA at 12 V. The set measures 3525×1154×1665 mm (138.8×45.4×65.6 in) and produces 71 dBA at 7 m.

125 kW
Standby
6.2 L
Displacement
9.0 L
Oil capacity
6
Document types

How to read your Kohler serial & model number →

Specifications

FuelL.P./N.G.
Frequency60.0 Hz
Standby power125 kW
Standby kVA91
EmissionsEPA-Certified for 60 Hz Stationary Emergency Applications
ControllerAPM402
Oil capacity9.0 L
Voltage options120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 277/480 V, 347/600 V
Phase3
Rated current417 A
Power factor0.8
Battery cranking650 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity28.4 L
Max ambient45 °C
Dimensions (L×W×H)3525×1154×1665 mm
Sound level71.0 dBA @ 7 m

Engine

Kohler KG6208THD 6.2L
Oil capacity9.0 L
Coolant capacity28.4 L
Displacement6.2 L
AspirationTurbocharged, Aftercooled
Rated speed1800 rpm

Maintenance & consumables

for the Kohler KG6208THD 6.2L
ItemSpecCapacityPart #Interval
Air filter find
Fuel filter find
Oil filterCartridge×1 find
Belt find
Coolant7.3 L
Oil9.0 L

Common questions

What is the power rating of the Kohler KG125?

The Kohler KG125 is rated 125 kW standby (91.0 kVA).

What engine does the Kohler KG125 use?

The Kohler KG125 is powered by the Kohler KG6208THD 6.2L engine.

What fuel does the Kohler KG125 use?

The Kohler KG125 runs on L.P./N.G..

What is the oil capacity of the Kohler KG125?

The Kohler KG6208THD 6.2L engine in the Kohler KG125 has an oil capacity of 9.0 liters.

Parts

5model family
Part #DescriptionQtySystem
ADV-9082ECU Diagnostic Port, Typical1Wiring diagram buy
343302Gas Filter Element1Service part / kit buy
ADV-9052D-DService part / kit buy
ADV-9116Service part / kit buy
ADV-9116D-EService part / kit buy

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime
Standby
Standby
Standby25%
Standby50%
Standby75%
Standby100%

Available documents

BrochureSpec sheetReferenceParts manualService manualWiring diagram

Other sets with this engine