HomeKohlerKohler 350REZX

Kohler 350REZX Generator Set

The Kohler 350REZX is a 350 kW (438 kVA) Natural Gas standby generator set powered by a Doosan D183TIC engine. It is available at 120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 240/416 V, 277/480 V and 347/600 V, 3-phase, 60 Hz and rated 1216 A. It holds about 42.1 L (11.1 gal) of oil and 163 L (43.1 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 2 group-31 batteries rated 925 CCA at 12 V. The set measures 3745×1711×2464 mm (147.4×67.4×97.0 in), weighs about 3900 kg (8598 lb) and produces 69 dBA.

350 kW
Standby
18.273 L
Displacement
42.1 L
Oil capacity
5
Document types

How to read your Kohler serial & model number →

Specifications

FuelNatural Gas
Frequency60.0 Hz
Standby power350 kW
Standby kVA438
Prime power300 kW
EmissionsEPA-Certified for Stationary Emergency Applications
ControllerAPM402, APM603, Decision-Maker 550, Decision-Maker 6000
Oil capacity42.1 L
Alternator4M4019
Voltage options120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 240/416 V, 277/480 V, 347/600 V
Phase3
Rated current1216 A
Power factor0.8
Battery group31
Battery cranking925 CCA
Battery voltage12 V
Battery quantity2
Coolant capacity163 L
Max ambient50 °C
Dimensions (L×W×H)3745×1711×2464 mm
Dry weight3900 kg
Sound level69.0 dBA
Fuel tank0.0 L

Engine

Doosan D183TIC
Oil capacity42.1 L
Coolant capacity242.0 L
Displacement18.273 L
AspirationTurbocharged, Charge Air-Cooled
Rated speed1800 rpm

Maintenance & consumables

for the Doosan D183TIC
ItemSpecCapacityPart #Interval
Air filterDry find
Fuel filter find
Oil filterCartridge×2 find
Belt find
Coolant
OilKohler Genuine oil and filters

Common questions

What is the power rating of the Kohler 350REZX?

The Kohler 350REZX is rated 350 kW standby (438.0 kVA).

What engine does the Kohler 350REZX use?

The Kohler 350REZX is powered by the Doosan D183TIC engine.

What fuel does the Kohler 350REZX use?

The Kohler 350REZX runs on Natural Gas.

What is the oil capacity of the Kohler 350REZX?

The Doosan D183TIC engine in the Kohler 350REZX has an oil capacity of 42.1 liters.

What alternator does the Kohler 350REZX use?

The Kohler 350REZX uses a 4M4019 alternator.

Parts

13model family
Part #DescriptionQtySystem
300REZXD300 KW L.P./N.G. GENSET1Service part / kit PartsGeek
350EOZCS350 KW DIESEL COMMERCIAL MARINE GENSET1Service part / kit PartsGeek
350REOZJC350 KW DIESEL GENSET1Service part / kit PartsGeek
350REOZJD350 KW DIESEL GENSET1Service part / kit PartsGeek
350REZXD350 KW L.P./N.G. GENSET1Service part / kit PartsGeek
400REOZJC400 KW DIESEL GENSET1Service part / kit PartsGeek
400REOZJD400 KW DIESEL GENSET1Service part / kit PartsGeek
500EOZCS500 KW DIESEL COMMERCIAL MARINE GENSET1Service part / kit PartsGeek
500REOZJC500 KW DIESEL GENSET1Service part / kit PartsGeek
KD1250-41250 KW DIESEL TIER 4 GENSET1Service part / kit PartsGeek
KD1250A1250 kW Diesel Genset1Service part / kit PartsGeek
KG8080 kW L.P./N.G. Genset1Service part / kit PartsGeek
KG80R80 kW L.P./N.G. Genset1Service part / kit PartsGeek

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
Prime25%33.5
Prime50%55.2
Prime75%78.8
Prime100%102.9
Standby25%35.5
Standby50%59.8
Standby75%86.5
Standby100%112.9

Available documents

Brochure (Kohler)Brochure — 180-450REZX G6109 (Kohler)Brochure — 300-500REZX G6178 (Kohler)Brochure — G6-39 0918AZ (Kohler)Brochure — GSA Product List (Kohler)Spec sheet (Kohler)Spec sheet — G4-191 1018H (Kohler)Spec sheet — WPC 350REZXD-Submittal-24-02-01 (Kohler)Spec sheet — g4191 (Kohler)Spec sheet — g4297 (Kohler)Reference — FinalGSAPriceListEffective 3-20-2023 (Kohler)Reference — GSAPriceList (Kohler)Parts manual — kohler consolidated price list (Kohler)Parts manual — tp6706 (Kohler)Wiring diagram — TP-6832 1218G (Kohler)Wiring diagram — tp6713 (Kohler)

Other sets with this engine