HomeKohlerKohler 150 REOZJ4

Kohler 150 REOZJ4 Generator Set

The Kohler 150 REOZJ4 is a 150 kW (187.5 kVA) Diesel standby generator set powered by a John Deere 6068HFG08 engine. It is available at 120/208 V, 120/240 V, 277/480 V and 347/600 V, 3-phase, 60 Hz and rated 225 A. It holds about 28.5 L (7.5 gal) of oil and 35.6 L (9.4 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses 2 batteries rated 400 CCA at 12 V. The set measures 3531×1191×2276 mm (139.0×46.9×89.6 in), weighs about 3532 kg (7787 lb) and produces 71 dBA at 7 m. An integrated tank holds 923 L (243.8 gal), roughly 24 hours of runtime. The same 6068HFG08 engine also powers generator sets from MQ Power.

150 kW
Standby
6.8 L
Displacement
28.5 L
Oil capacity
4
Document types

How to read your Kohler serial & model number →

Typical fuel consumption for 150–155 kW Diesel generators →

Compare with other 150–155 kW Diesel generators →

Service parts for the 150 REOZJ4

Grouped by system, with how many of each the parts manual calls for.

Air intake

1 required

Oil system

1 required

Belts

1 required

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power150 kW
Standby kVA187
Prime power139 kW
EmissionsTier 4 Final
ControllerDecision-Maker 3500
Oil capacity28.5 L
Alternator4S12X
Voltage options120/208 V, 120/240 V, 277/480 V, 347/600 V
Phase3
Rated current225 A
Power factor0.8
Battery cranking400 CCA
Battery voltage12 V
Battery quantity2
Coolant capacity35.6 L
Engine jacket water11.9 L
Max ambient40 °C
Dimensions (L×W×H)3531×1191×2276 mm
Dry weight3532 kg
Sound level71.0 dBA @ 7 m
Fuel tank923.0 L
Tank runtime24 hr

Engine

John Deere 6068HFG08
Oil capacity28.5 L
Coolant capacity35.6 L
Displacement6.8 L
AspirationTurbocharged, Charge Air Cooled
Rated speed1800 rpm

Same engine, other brands

1 brand

The John Deere 6068HFG08 in this set also powers 1 generator set sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
MQ PowerDCA150SSJU4F

Maintenance & consumables

for the John Deere 6068HFG08
ItemSpecCapacityPart #Interval
Air filterAir CleanerGM90735 Amazon eBay
Fuel filterPrimary
Oil filterOIL FILTER (5970) (5975)RE539279 Amazon $34.99 eBay $15.00 KuduParts $27.00 FridayParts $28.99
BeltFAN BELT; LGTH = 1715 mm (2492) (24LN)DZ118786 Amazon eBay

Compatible filters for the John Deere 6068HFG08 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

Common questions

What is the power rating of the Kohler 150 REOZJ4?

The Kohler 150 REOZJ4 is rated 150 kW standby (187.5 kVA).

Which engine powers the Kohler 150 REOZJ4?

The Kohler 150 REOZJ4 is powered by the John Deere 6068HFG08 engine.

Is the Kohler 150 REOZJ4 diesel or gas?

The Kohler 150 REOZJ4 runs on Diesel.

What is the oil capacity of the Kohler 150 REOZJ4?

The John Deere 6068HFG08 engine in the Kohler 150 REOZJ4 has an oil capacity of 28.5 liters.

What is the cooling system capacity of the Kohler 150 REOZJ4?

The Kohler 150 REOZJ4 cooling system holds 35.6 liters (9.4 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the continuous rating of the Kohler 150 REOZJ4?

The Kohler 150 REOZJ4 is rated 139 kW prime (174 kVA), against 150 kW standby.

How loud is the Kohler 150 REOZJ4?

The Kohler 150 REOZJ4 is rated at 71.0 dBA at 7 m, per the manufacturer specification sheet.

How much does the Kohler 150 REOZJ4 weigh?

The Kohler 150 REOZJ4 has a dry weight of 3532 kg (7786 lb).

What size fuel tank does the Kohler 150 REOZJ4 have?

The Kohler 150 REOZJ4 has a 923 liter (244 US gallon) fuel tank, giving about 24 hours of runtime.

What voltages is the Kohler 150 REOZJ4 available in?

The Kohler 150 REOZJ4 is offered in 120/208 V, 120/240 V, 277/480 V, 347/600 V, 3-phase.

What size battery does the Kohler 150 REOZJ4 need?

The Kohler 150 REOZJ4 uses 2 batteryies, 12 V each, 400 CCA, per the manufacturer specification sheet.

Which alternator is fitted to the Kohler 150 REOZJ4?

The Kohler 150 REOZJ4 uses a 4S12X alternator.

Which oil filter part number does the Kohler 150 REOZJ4 take?

The Kohler 150 REOZJ4 uses oil filter part number RE539279.

What fuel filter fits the Kohler 150 REOZJ4?

The Kohler 150 REOZJ4 uses fuel filter part numbers KOHLER GM50006, KOHLER GM48727.

What air filter does the Kohler 150 REOZJ4 use?

The Kohler 150 REOZJ4 uses air filter part number GM90735.

Troubleshooting

7

Fault codes

CodeMeaningRemedy
32High Coolant Temperature
32AEmergency StopReset the emergency stop switch.
40Pre High Coolant Temp.
41Pre Low Oil PressureCheck and adjust oil level or replace oil pump.
62Low Battery Volts
63Low FuelRefuel the generator set.
48Emergency Stop

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

58
Part #DescriptionQtySystem
DZ110083STARTER1Starter Amazon eBay
DZ112918SECONDARY FUEL FILTER1Fuel filter Amazon $40.99 eBay $117.99 FridayParts $62.20
DZ115392Secondary Fuel Filter1Fuel filter Amazon $28.50 eBay $29.95 KuduParts $43.00
DZ118556FAN BELT1Belt Amazon eBay
DZ118557FAN BELT4Belt Amazon eBay
DZ118558FAN BELT1Belt Amazon eBay $85.00
DZ118559FAN BELT(LGTH = 1700 MM)Belt Amazon eBay $55.53
DZ118560FAN BELT1Belt Amazon eBay
DZ118561FAN BELT; LGTH = 1750 mm (24JX)Belt Amazon eBay $41.99
DZ118786FAN BELT1Belt Amazon eBay
DZ121128FAN BELT; LGTH = 1725 mm (24JW)Belt Amazon eBay
DZ121129FAN BELTLGTH = 1745 mm (24PD)Belt Amazon eBay
DZ121133FAN BELTBelt Amazon eBay
DZ123153ALTERNATOR1Alternator Amazon $369.48 eBay $299.00
DZ128543PRIMARY FUEL FILTER1Fuel filter Amazon $166.88 eBay $44.95 KuduParts $24.00 FridayParts $26.20
GM90735Air Cleaner1Air filter Amazon eBay
GM91358Element, Air Cleaner1Air filter Amazon eBay
GM91647Hose, Hump1Hose Amazon eBay
GM92823Element, Air Cleaner Safety1Air filter Amazon eBay
RE505939(1321)(OD = 188 MM)Pulley Amazon eBay $199.99
RE508578CRANKSHAFT PULLEY & DAMPER (OD = 264 mm) (1320)1Pulley Amazon eBay $725.00
RE520906PRIMARY FUEL FILTER3Fuel filter Amazon $33.99 eBay $39.99 KuduParts $38.00 FridayParts $39.85
RE523501STARTER (3073)1Starter Amazon eBay $216.60 FridayParts $285.90
RE523502STARTER1Starter Amazon $210.00 eBay $213.99 FridayParts $187.69 SinoCMP $339.00
RE528428CRANKSHAFT PULLEY & DAMPER (OD = 264 mm) (1340)1Pulley Amazon eBay
RE537508ALTERNATOR12V, 120A (3157)Alternator Amazon $161.13 eBay $161.13 FridayParts $257.99
RE539279ENGINE OIL FILTER1Oil filter Amazon $34.99 eBay $15.00 KuduParts $27.00 FridayParts $28.99
RE541578CRANKSHAFT PULLEY AND DAMPER; OD = 190 mm (1343)Fuel filter Amazon eBay $1965.58
RE549229STARTER1Starter Amazon eBay $484.01 FridayParts $189.99
RE549230STARTER(24V, PA90L)Starter Amazon eBay $295.00 FridayParts $315.99
RE550906ALTERNATOR12V, 240A (3165)Alternator Amazon eBay
RE551637STARTER (12 V)1Starter Amazon eBay
RE551644STARTER1Starter Amazon $275.95 eBay $1245.60 FridayParts $203.00
RE552251STARTER1Starter Amazon eBay
RE555751ALTERNATOR1Alternator Amazon eBay $177.95 SinoCMP $369.00
RE558675ALTERNATOR(24V, 60A)Alternator Amazon eBay
RE558676ALTERNATOR1Alternator Amazon $156.95 eBay $156.95 FridayParts $168.00
RE558678ALTERNATOR1Alternator Amazon eBay $442.80 FridayParts $310.88
RE564633STARTER(24V, 4KW)Starter Amazon $1034.64 eBay $202.95 FridayParts $315.20
T282795FAN BELTLGTH = 1690 mm (24PJ)Belt Amazon eBay
DZ100304Diesel Exhaust Fluid Inline Filter1Service part / kit Amazon eBay $84.99
DZ105100CRANKCASE VENT FILTER1Service part / kit Amazon $31.79 eBay $90.27 KuduParts $52.00
DZ105796OCV FILTER1Service part / kit Amazon $31.99 eBay $47.34
DZ110562Crankcase Vent System (USE WITH DZ113378 974G)1Service part / kit Amazon eBay $49.99
DZ111004DEF TANK HEADER FILTER (25 Micron)1Service part / kit Amazon eBay $58.00
DZ111166(3402) (3404) (3408) (3409) (974G)1Service part / kit Amazon eBay
DZ114640DIESEL EXHAUST FLUID (DEF) DOSING UNIT FILTER1Service part / kit Amazon $14.99 eBay $17.65 FridayParts $14.30
DZ114695DEF TANK INLET SCREEN1Service part / kit Amazon eBay
DZ119883TORSIONAL DAMPER(OD = 350 mm)Service part / kit Amazon eBay
R113480FAN PULLEYService part / kit Amazon eBay
R128659FAN PULLEY1Service part / kit Amazon $142.04 eBay $142.04
R128660FAN PULLEY(OD = 168 MM)Service part / kit Amazon $142.41 eBay $72.11 FridayParts $121.60
R128662FAN PULLEY (OD = 203 mm)(OD = 203 MM)Service part / kit Amazon eBay $175.75
R522890FAN PULLEYService part / kit Amazon eBay
R545125CRANKSHAFT PULLEY (OD = 188 mm)(OD = 188 MM)Service part / kit Amazon eBay $349.95
RE505940(6895)1Service part / kit Amazon eBay $975.00
RE505941(OD = 188 mm)1Service part / kit Amazon eBay $500.00
RE57604TORSIONAL DAMPER(OD = 271 mm) (1303)Service part / kit Amazon eBay $380.00

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
Prime25%12.13.2
Prime50%20.45.4
Prime75%29.17.7
Prime100%38.610.2
Standby25%13.23.5
Standby50%22.35.9
Standby75%32.28.5
Standby100%42.411.2

Available documents

Spec sheet — Kohler-150REOZJ4-Tier-4 (Kohler)Spec sheet — g5430 (Kohler)Reference — Kohler CaseStudy MEMA (Kohler)Reference — adv8722 (Kohler)Parts manual — tp6894 (Kohler)Service manual — TP-6356 (Kohler)Service manual — decision maker tp6356 (Kohler)Service manual — tp6924 (Kohler)

This page was generated from the 8 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.

Full service, cheapest listings

Priced items from this model's own parts manual.

Oil filter RE539279$15.00
1 priced item$15.00
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