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Kohler 4M4021 Generator Set

The Kohler 4M4021 is a 315 kW (394 kVA) Diesel standby generator set powered by a John Deere 6135HFG84B engine. It is available at 120/208 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 277/480 V and 120/240 V, 3-phase, 60 Hz and rated 1249 A. It holds about 40 L (10.6 gal) of oil and 18 L (4.8 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 2 group-Two batteries rated 925 CCA at 24 V. The set measures 3630×1425×1936 mm (142.9×56.1×76.2 in), weighs about 3883 kg (8561 lb) and produces N/A dBA at N/A m. An integrated tank holds N/A L (None gal), roughly N/A hours of runtime.

315 kW
Standby
13.5 L
Displacement
40.0 L
Oil capacity
1
Document types

How to read your Kohler serial & model number →

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power315 kW
Standby kVA394
Prime power315 kW
EmissionsTier 3
ControllerAPM402
Oil capacity40.0 L
AlternatorKohler 4M4021
Voltage options120/208 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 277/480 V, 120/240 V
Phase3
Rated current1249 A
Power factor0.8
Circuit breaker1181 A
Battery groupTwo
Battery cranking925 CCA
Battery voltage24 V
Battery quantity2
Coolant capacity18 L
Max ambient50 °C
Dimensions (L×W×H)3630×1425×1936 mm
Dry weight3883 kg
Tank runtimeN/A hr

Engine

John Deere 6135HFG84B
Oil capacity40.0 L
Coolant capacity18.0 L
Displacement13.5 L
AspirationTurbocharged, Charge Air-Cooled
Rated speed1800 rpm

Maintenance & consumables

for the John Deere 6135HFG84B
ItemSpecCapacityPart #Interval
Air filterDry1000 hr find
Fuel filterPrimary: 10 Microns, Secondary: 2 Microns @98% EfficiencyGM804601000 hr PartsGeek $48.97
Oil filterCartridge×1GM804341000 hr Amazon eBay PartsGeek
BeltN/A1000 hr find
Coolant filterN/A find
OilFull Pressure40.0 L

Compatible filters for the John Deere 6135HFG84B — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: John Deere AH115833 John Deere RE67829 John Deere AZ61133 John Deere AZ61134 Donaldson P532931

Common questions

What is the power rating of the Kohler 4M4021?

The Kohler 4M4021 is rated 315 kW standby (394.0 kVA).

What engine does the Kohler 4M4021 use?

The Kohler 4M4021 is powered by the John Deere 6135HFG84B engine.

What fuel does the Kohler 4M4021 use?

The Kohler 4M4021 runs on Diesel.

What is the oil capacity of the Kohler 4M4021?

The John Deere 6135HFG84B engine in the Kohler 4M4021 has an oil capacity of 40.0 liters.

What alternator does the Kohler 4M4021 use?

The Kohler 4M4021 uses a Kohler 4M4021 alternator.

What oil filter does the Kohler 4M4021 use?

The Kohler 4M4021 uses oil filter part number GM80434.

What fuel filter does the Kohler 4M4021 use?

The Kohler 4M4021 uses fuel filter part number GM80460.

What air filter does the Kohler 4M4021 use?

The Kohler 4M4021 uses air filter part numbers JOHN DEERE AH115833, JOHN DEERE RE67829.

Parts

1
Part #DescriptionQtySystem
5M4272GENSET WEIGHT (WET) 8560 LBS1Service 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
Standby25%29.57.8
Standby50%56.715.0
Standby75%80.321.2
Standby100%100.326.5

Available documents

Spec sheet — g5619 (Kohler)