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Kohler 50REOZK Generator Set

The Kohler 50REOZK is a 52 kW (65 kVA) Diesel standby generator set powered by a Kohler KDI 3404TM engine. It is available at 120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 277/480 V and 347/600 V, 3-phase, 60 Hz and rated 163 A. It holds about 15.6 L (4.1 gal) of oil and 12.3 L (3.2 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 1 group-1 battery rated 650 CCA at 12 V. The set measures 2300×1040×1131 mm (90.6×40.9×44.5 in), weighs about 802 kg (1768 lb) and produces 130 dBA at 1 m. An integrated tank holds 15.3 L (4.0 gal), roughly 17.4 hours of runtime.

52 kW
Standby
3.359 L
Displacement
15.6 L
Oil capacity
3
Document types

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Typical fuel consumption for 50–55 kW Diesel generators →

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Specifications

FuelDiesel
Frequency60.0 Hz
Standby power52 kW
Standby kVA65
Prime power47 kW
EmissionsTier 3
ControllerAPM402, Decision-Maker 550
Oil capacity15.6 L
Alternator4P7BX (4-pole, Class H insulation)
Voltage options120/208 V
Phase3
Rated current163 A
Power factor0.8
Circuit breaker163 A
Battery group1
Battery cranking650 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity12.3 L
Max ambient50 °C
Dimensions (L×W×H)2300×1040×1131 mm
Dry weight802 kg
Sound level130.0 dBA @ 1 m
Fuel tank15.3 L
Tank runtime17.4 hr

Engine

Kohler KDI 3404TM
Oil capacity15.6 L
Coolant capacity4.5 L
Displacement3.359 L
AspirationTurbo
Rated speed1500 rpm

Maintenance & consumables

for the Kohler KDI 3404TM
ItemSpecCapacityPart #Interval
Air filtercartridge replacement5000 hr
Fuel filterControl water filter cartridge250 hr
Oil filtercartridge replacement×1250 hr
BatteryOne, 650 CCA
BeltCheck Poly-V alternator1500 hr
Coolantcheck level1000 hr
Oilcheck level15.6250 hr
Spark plug

Service specifications

30
TypeItemValueUnitCondition
Other10 in. weld flange bolt circle diameter B361.95mm (14.25 in.)
Other10 in. weld flange outside diameter C406.4mm (16.0 in.)
Other10 in. weld flange quantity of bolts / bolt hole diameter D12, 25.40mm (1.00 in.)
Other12 in. weld flange bolt circle diameter B431.80mm (17.00 in.)
Other12 in. weld flange outside diameter C482.6mm (19.0 in.)
Other12 in. weld flange quantity of bolts / bolt hole diameter D12, 25.40mm (1.00 in.)
Other14 in. weld flange bolt circle diameter B476.25mm (18.75 in.)
Other14 in. weld flange outside diameter C533.4mm (21.0 in.)
Other14 in. weld flange quantity of bolts / bolt hole diameter D12, 28.58mm (1.13 in.)
Other16 in. weld flange bolt circle diameter B539.75mm (21.25 in.)
Other16 in. weld flange outside diameter C596.9mm (23.5 in.)
Other16 in. weld flange quantity of bolts / bolt hole diameter D16, 28.58mm (1.13 in.)
Other18 in. weld flange bolt circle diameter B577.85mm (22.75 in.)
Other18 in. weld flange outside diameter C635.0mm (25.0 in.)
Other18 in. weld flange quantity of bolts / bolt hole diameter D16, 31.75mm (1.25 in.)
Other20 in. weld flange bolt circle diameter B635.00mm (25.00 in.)
Other20 in. weld flange outside diameter C698.5mm (27.5 in.)
Other20 in. weld flange quantity of bolts / bolt hole diameter D20, 31.75mm (1.25 in.)
Other5 in. weld flange bolt circle diameter B215.90mm (8.50 in.)
Other5 in. weld flange outside diameter C241.30mm (9.50 in.)
Other5 in. weld flange quantity of bolts / bolt hole diameter D8, 22.23mm (0.88 in.)
Other6 in. weld flange bolt circle diameter B254.0mm (10.0 in.)
Other6 in. weld flange outside diameter C279.4mm (11.0 in.)
Other6 in. weld flange quantity of bolts / bolt hole diameter D8, 22.23mm (0.88 in.)
Other8 in. weld flange bolt circle diameter B298.45mm (11.75 in.)
Other8 in. weld flange outside diameter C342.9mm (13.5 in.)
Other8 in. weld flange quantity of bolts / bolt hole diameter D8, 22.23mm (0.88 in.)
OtherWeld flange angle A (10, 12, 14 in. nominal pipe size)30deg.
OtherWeld flange angle A (16, 18, 20 in. nominal pipe size)22.5deg.
OtherWeld flange angle A (5, 6, 8 in. nominal pipe size)45deg.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

How many kW is the Kohler 50REOZK?

The Kohler 50REOZK is rated 52 kW standby (65.0 kVA).

Which engine powers the Kohler 50REOZK?

The Kohler 50REOZK is powered by the Kohler KDI 3404TM engine.

Is the Kohler 50REOZK diesel or gas?

The Kohler 50REOZK runs on Diesel.

How much oil does the Kohler 50REOZK take?

The Kohler KDI 3404TM engine in the Kohler 50REOZK has an oil capacity of 15.6 liters.

What alternator does the Kohler 50REOZK use?

The Kohler 50REOZK uses a 4P7BX alternator. It has 4 poles. Insulation class H.

Parts

5
Part #DescriptionQtySystem
F-44kerosene, NATO designationFuel Amazon eBay
F-63kerosene, NATO designation, equivalent to F-34/F-35 with additivesFuel Amazon eBay
ED0010101730-SCamshaftService part / kit Amazon eBay
ED0010101820-SCamshaftService part / kit Amazon eBay $1282.30
ED0014603650-SSix Nicks SN8Service part / kit Amazon eBay $58.64

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%4.91.3
Prime50%8.32.2
Prime75%12.13.2
Prime100%16.14.2
Standby5.31.4
Standby25%5.31.4
Standby50%9.12.4
Standby75%13.23.5
Standby100%17.44.6

Available documents

Spec sheet — G5-438 1018G (Kohler)Spec sheet — WPC PO1109 50-kW-Kohler-50REOZK-Submittal (Kohler)Spec sheet — g5438 (Kohler)Reference (Kohler)Reference — 15-60REOZK G6141 (Kohler)Reference — G6-39 0918AZ (Kohler)Service manual — tp6924 (Kohler)