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Kohler 50REOZJ Generator Set

The Kohler 50REOZJ is a 50 kW (63 kVA) Diesel standby generator set powered by a John Deere 4024HF285B engine. It operates at 60 Hz. It holds about 8.2 L (2.2 gal) of oil and 10.6 L (2.8 gal) of coolant.

50 kW
Standby
2.4 L
Displacement
8.2 L
Oil capacity
4
Document types

How to read your Kohler serial & model number →

Typical fuel consumption for 50–55 kW Diesel generators →

Compare with other 50–55 kW Diesel generators →

Service parts for the 50REOZJ

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

Fuel system

2 required
223414Fuel filter (primary)$13.45eBay
GM63894Fuel filter (secondary)$34.99eBay

Oil system

1 required

Belts

1 required
GM23828Beltsee priceAmazon

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

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power50 kW
Standby kVA63
Prime power45 kW
EmissionsTier 3 EPA-Certified for Stationary Emergency Applications
ControllerDecision-Maker 3000
Oil capacity8.2 L
Alternator4P7BX (4-pole, Class H insulation)

Engine

John Deere 4024HF285B
Oil capacity8.2 L
Coolant capacity10.6 L
Displacement2.4 L
AspirationTurbocharged
Rated speed1800 rpm

Maintenance & consumables

for the John Deere 4024HF285B
ItemSpecCapacityPart #Interval
Fuel filterPrimary223414 Amazon eBay $13.45
Fuel filterSecondaryGM63894 Amazon eBay $34.99
Oil filterGM32809 Amazon $57.96 eBay $26.25
BeltGM23828 Amazon eBay

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 50REOZJ?

The Kohler 50REOZJ is rated 50 kW standby (63.0 kVA).

Which engine powers the Kohler 50REOZJ?

The Kohler 50REOZJ is powered by the John Deere 4024HF285B engine.

What kind of fuel does the Kohler 50REOZJ run on?

The Kohler 50REOZJ runs on Diesel.

How much oil does the Kohler 50REOZJ take?

The John Deere 4024HF285B engine in the Kohler 50REOZJ has an oil capacity of 8.2 liters.

Which alternator is fitted to the Kohler 50REOZJ?

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

What oil filter does the Kohler 50REOZJ use?

The Kohler 50REOZJ uses oil filter part number GM32809.

Which fuel filter part number does the Kohler 50REOZJ take?

The Kohler 50REOZJ uses fuel filter part numbers 223414, GM63894.

Parts

1
Part #DescriptionQtySystem
360031Filter, oil1Fuel filter Amazon $69.41 eBay $37.99 FridayParts $34.99

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%4.51.2
Prime50%7.62.0
Prime75%10.82.9
Prime100%13.73.6
Standby25%5.01.3
Standby50%8.52.2
Standby75%12.13.2
Standby100%16.24.3

Available documents

Spec sheet (Kohler)Spec sheet — WPC-PO-6463-100kw-SA-Submittal (Kohler)Spec sheet — WPC PO1110 100-kW-Kohler-KG100-Submittal (Kohler)Reference — G6-39 0918AZ (Kohler)Reference — Reinstated Enclosures (Kohler)Reference — g6175 (Kohler)Parts manual — Woodstock-200REOZJF-Submittal 01.18.24 (Kohler)Parts manual — fb10 (Kohler)Parts manual — g260412 (Kohler)Parts manual — tp5408 (Kohler)Parts manual — tp6801 (Kohler)Service manual — tp5851 (Kohler)Service manual — tp5937 (Kohler)Service manual — tp6798 (Kohler)
Full service, cheapest listings

Priced items from this model's own parts manual.

Fuel filter (primary) 223414$13.45
Fuel filter (secondary) GM63894$34.99
Oil filter GM32809$26.25
3 priced items$74.69