HomeKohlerKohler 125REZGC

Kohler 125REZGC Generator Set

The Kohler 125REZGC is a 105 kW (131 kVA) LP Gas standby generator set powered by a Psi 8.8 L engine. It is available at 480 V, 3-phase and 60 Hz. It holds about 8.5 L (2.2 gal) of oil and 25.5 L (6.7 gal) of coolant. The same 8.8 L engine also powers generator sets from Cummins/Onan.

105 kW
Standby
8.8 L
Displacement
8.5 L
Oil capacity
4
Document types

How to read your Kohler serial & model number →

Specifications

FuelLP Gas
Frequency60.0 Hz
Standby power105 kW
Standby kVA131
Prime power106 kW
EmissionsEPA-certified
Oil capacity8.5 L
AlternatorKohler 4R12X
Voltage options480 V
Phase3

Engine

Psi 8.8 L
Oil capacity8.5 L
Coolant capacity25.5 L
Displacement8.8 L
AspirationTurbocharged and Charge Cooled
Rated speed1800 rpm

Maintenance & consumables

for the Psi 8.8 L
ItemSpecCapacityPart #Interval
Oil filter find
Coolant
Oil8.5

Common questions

What is the power rating of the Kohler 125REZGC?

The Kohler 125REZGC is rated 105 kW standby (131.0 kVA).

What engine does the Kohler 125REZGC use?

The Kohler 125REZGC is powered by the Psi 8.8 L engine.

What fuel does the Kohler 125REZGC use?

The Kohler 125REZGC runs on LP Gas.

What is the oil capacity of the Kohler 125REZGC?

The Psi 8.8 L engine in the Kohler 125REZGC has an oil capacity of 8.5 liters.

What alternator does the Kohler 125REZGC use?

The Kohler 125REZGC uses a Kohler 4R12X alternator.

Parts

12
Part #DescriptionQtySystem
273113Gasket–Intake1Sensor PartsGeek
GM19721Gasket, exhaust manifold2Gasket PartsGeek
GM62308Air Cleaner Assy1Air filter PartsGeek
GM62309Element, Air Cleaner1Air filter Amazon eBay $510.99 PartsGeek
GM69285Hose, Air Intake1Hose PartsGeek
GM87592Oil filter1Oil filter Amazon eBay $37.50 PartsGeek
GM87608Spark plug8Spark plug Amazon eBay $60.00 PartsGeek
GM92063-SMaintenance KitMaintenance kit PartsGeek
GM92099-SMaintenance KitMaintenance kit PartsGeek
150ERESCKOHLER 150ERESC generatorService part / kit PartsGeek
7610025-1Service part / kit PartsGeek
GM80582-MA1X-612-71Service 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
Standby
Standby25%
Standby50%
Standby75%
Standby100%

Available documents

Brochure (Kohler)Brochure — G6-39 0918AZ (Kohler)Brochure — GSA Product List (Kohler)Brochure — vertical circulator plug in Kohler. G6171 (Kohler)Spec sheet (Kohler)Spec sheet — Kohler-Gas Generators Brochure (Kohler)Installation manual — cold weather kit tt1723 (Kohler)Installation manual — tt1723 (Kohler)Wiring diagram — tp6799 (Kohler)