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Kohler 100REZG Generator Set

The Kohler 100REZG is a 80 kW (80 kVA) Natural Gas, LP Gas, or Dual Fuel standby generator set powered by a General Motors Industrial Powertrain Vortec 8.1 L engine. It operates at 60 Hz. It holds about 8 L (2.1 gal) of oil and 25.7 L (6.8 gal) of coolant. The same Industrial Powertrain Vortec 8.1 L engine also powers generator sets from General Motors and MTU.

80 kW
Standby
8.1 L
Displacement
8.0 L
Oil capacity
3
Document types

How to read your Kohler serial & model number →

Specifications

FuelNatural Gas, LP Gas, or Dual Fuel
Frequency60.0 Hz
Standby power80 kW
Standby kVA80
Controller6000, Decision-Maker 550
Oil capacity8.0 L
AlternatorKohler 4S9

Engine

General Motors Industrial Powertrain Vortec 8.1 L
Oil capacity8.0 L
Coolant capacity25.7 L
Displacement8.1 L
AspirationNatural Aspiration
Rated speed1800 rpm

Maintenance & consumables

for the General Motors Industrial Powertrain Vortec 8.1 L
ItemSpecCapacityPart #Interval
Oil filterGM16703 Amazon eBay $10.00 PartsGeek

Common questions

What is the power rating of the Kohler 100REZG?

The Kohler 100REZG is rated 80 kW standby (80.0 kVA).

What engine does the Kohler 100REZG use?

The Kohler 100REZG is powered by the General Motors Industrial Powertrain Vortec 8.1 L engine.

What fuel does the Kohler 100REZG use?

The Kohler 100REZG runs on Natural Gas, LP Gas, or Dual Fuel.

What is the oil capacity of the Kohler 100REZG?

The General Motors Industrial Powertrain Vortec 8.1 L engine in the Kohler 100REZG has an oil capacity of 8.0 liters.

What alternator does the Kohler 100REZG use?

The Kohler 100REZG uses a Kohler 4S9 alternator.

Parts

22
Part #DescriptionQtySystem
GM16430Sealer, oil pan / Sealant, LoctiteFluid PartsGeek
GM16576Seal, oil pan drain plug1Seal PartsGeek
GM16703Filter, oil1Oil filter Amazon eBay $10.00 PartsGeek
GM18888Sealer, crankshaft rear main bearingFluid PartsGeek
GM18906Sensor, knock2Sensor PartsGeek
GM18933Sealer, camshaft bearing hole plugFluid PartsGeek
GM18934Grease, heavy duty multipurposeFluid PartsGeek
GM18951Gasket, engine front cover, also part of 761Gasket PartsGeek
GM18952Sensor, crankshaft position (includes 123)1Sensor PartsGeek
GM18963Gasket, water pump2Gasket PartsGeek
GM18964Gasket, engine coolant crossover2Gasket PartsGeek
GM18967Hose, therm bypass includes hose clamps1Hose PartsGeek
GM18971Seal, crankshaft rear oil1Seal PartsGeek
GM18972Seal, crankshaft front oil1Seal PartsGeek
GM18990Pump, oil with screen1Pump PartsGeek
GM19004Sensor, camshaft position (2001 GM engines / GM model year 2003 and older)1Sensor PartsGeek
GM19009Gasket, oil pan1Gasket PartsGeek
GM19027Pump kit, water (incl. 31, 82, 83, 85, 105)1Pump PartsGeek
GM24739Sensor, camshaft position (2002 and 2003 GM engines)1Sensor PartsGeek
GM51539Sensor, camshaft position (2004-- GM engines)1Sensor PartsGeek
GM75077Sensor, Cm/Shf Posn (GM model year 2004 and newer)Sensor PartsGeek
NGE012014Radiator Fan Shroud BoltsBolt 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)Spec sheet (Kohler)Wiring diagram — tp6712 (Kohler)

Other sets with this engine