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Katolight D375FNJ4 Generator Set

The Katolight D375FNJ4 is a 375 kW (468.75 kVA) standby generator set powered by a John Deere 6125HF070 engine. It is available at 347/600 V, 3-phase, 60 Hz and rated 451 A. It holds about 42 L (44.4 US qt) of oil and 16.2 L (4.3 gal) of coolant. The same 6125HF070 engine also powers generator sets from John Deere and SDMO.

375 kW
Standby
12.5 L
Displacement
42.0 L
Oil capacity
1
Document types

Service parts for the D375FNJ4

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

Fuel system

1 required
RE502203Fuel filter (primary)$30.00eBay
Equivalents: WIX 33371, DONALDSON P551025, BALDWIN BF1390-O

Oil system

1 required
RG8536Oil filtersee priceAmazon

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

Specifications

Frequency60.0 Hz
Standby power375 kW
Standby kVA468
Prime power330 kW
ControllerModel #45 control panel
Oil capacity42 L (44.4 US qt)
Voltage options347/600 V
Phase3
Rated current451 A
Power factor0.8

Engine

John Deere 6125HF070
Oil capacity42 L (44.4 US qt)
Coolant capacity16.2 L
Displacement12.5 L
AspirationTurbocharged - Air to Air Intercooled
Rated speed1800 rpm

Filters for the John Deere 6125HF070

6

Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.

SystemFilterDescriptionCross-references
Oil filterP550595Lube Filter, Spin-On CombinationJOHN DEERE DZ118269, JOHN DEERE RE530107, NAPA 7777, BALDWIN BD7310 KuduParts $44.00
Oil filterP550020Lube Filter, Spin-On Full FlowJOHN DEERE AR58956, JOHN DEERE AT19044T, NAPA 1243, RENAULT VI 0003132302 KuduParts $23.00 FridayParts $25.67
Fuel filterP551773Fuel Filter, Spin-On SecondaryJOHN DEERE RE502204, JOHN DEERE RE506428, NAPA 3720, LETOURNEAU 10P732 buy
Fuel filterP550912Fuel Filter, CartridgeJOHN DEERE RE507284, NAPA 3785, SDMO 330361820 buy
Fuel / water separatorP551855Fuel Filter, Water Separator Spin-OnJOHN DEERE RE502203, BALDWIN BF1390-O, CLAAS 0007962130, MANITOWOC 03322877 FridayParts $39.06

Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:

SystemFilterDescriptionCross-references
Coolant filterP554685Coolant Filter, Spin-On Non-ChemicalJOHN DEERE RE11992, NAPA 4070, MTU 0002040791, BLUEBIRD 0064641 buy

Same engine, other brands

2 brands

The John Deere 6125HF070 in this set also powers 4 generator sets sold under 2 other brands. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
SDMOJ 400 K, J 440 K, R440K
John DeereUN-1GNOVOS

Maintenance & consumables

for the John Deere 6125HF070
ItemSpecCapacityPart #Interval
Air filter—500 hr
Fuel filter—500 hr
Fuel filterCheck the glass sediment bowl (A) of the fuel filter/water separator for water or debris. Loosen thumb screw (B) and drain water and debris from bowl into a suitable container, as needed.RE502203500 hr Amazon eBay $30.00 FridayParts $49.99
Oil filterRG8536250 hr Amazon eBay
Battery—
Belt—500 hr
Coolant—2000 hr
Coolant filter—
Oil42 L (44.4 US qt)—100 hr
Spark plug—

Compatible filters for the John Deere 6125HF070 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: John Deere AT220822 John Deere AT203051 John Deere AH115833 John Deere AH148880 John Deere RE67829

Common questions

What size generator is the Katolight D375FNJ4?

The Katolight D375FNJ4 is rated 375 kW standby (468.75 kVA).

Which engine powers the Katolight D375FNJ4?

The Katolight D375FNJ4 is powered by the John Deere 6125HF070 engine.

What's the oil capacity on a Katolight D375FNJ4?

The Katolight D375FNJ4 takes 42 L (44.4 US qt) of engine oil (John Deere 6125HF070 engine specification).

How much coolant does the Katolight D375FNJ4 hold?

The Katolight D375FNJ4 cooling system holds 16.2 liters (4.3 US gallons) for the engine, per the manufacturer specification sheet.

What is the prime power rating of the Katolight D375FNJ4?

The Katolight D375FNJ4 is rated 330 kW prime (412 kVA), against 375 kW standby.

What voltages is the Katolight D375FNJ4 available in?

The Katolight D375FNJ4 is offered in 347/600 V, 3-phase.

Which oil filter part number does the Katolight D375FNJ4 take?

The Katolight D375FNJ4 uses oil filter part number RG8536.

What fuel filter fits the Katolight D375FNJ4?

The Katolight D375FNJ4 uses fuel filter part number RE502203.

Which air filter part number does the Katolight D375FNJ4 take?

The Katolight D375FNJ4 uses air filter part numbers JOHN DEERE AT220822, JOHN DEERE AT203051.

Parts

40
Part #DescriptionQtySystem
RG34710Safety Alert Symbol1Oil filter Amazon eBay
RG8718ACoolant Pump Weep HolePump Amazon eBay
RG8742Belt Tensioner Spring Tension and Belt WearBelt Amazon eBay
RG9918A—High-Low Speed Select Rocker Switch1Speed select rocker switch Amazon eBay
100302RG,RG34710,7600 -19-30JUN97-3/4Service part / kit Amazon eBay
1400302RG,RG34710,7606 -19-30JUN97-1/1Service part / kit Amazon eBay
160302RG,RG34710,7601 -19-06SEP02-1/2Service part / kit Amazon eBay
4100302RG,RG34710,7600 -19-30JUN97-2/4Service part / kit Amazon eBay
55-13RG,RG34710,7600 -19-30JUN97-2/4Service part / kit Amazon eBay
55-14RG,RG34710,7600 -19-30JUN97-3/4Service part / kit Amazon eBay
55-16RG,RG34710,7601 -19-06SEP02-1/2Service part / kit Amazon eBay
55-18RG,RG34710,7602 -19-30JUN97-1/3Service part / kit Amazon eBay
55-20RG,RG34710,7602 -19-30JUN97-3/3Service part / kit Amazon eBay
55-22RG,RG34710,7606 -19-30JUN97-1/1Service part / kit Amazon eBay
55-23Diagnostic Trouble Code Display and Touch SwitchesService part / kit Amazon eBay
JMP11TOQ2Yields one shot 61 6 OVERSPEED 3to2 Yields 5 cycle (el7 SWITCH tat[c7 | ca {cg fer cra cry] Te Te faa] oT dT1 d]1 [2 73 [6 19 [9 | 22] 24]Service part / kit Amazon eBay
OUODN06Rear PTO Serial Number PlateService part / kit Amazon eBay
QUOD002Filling Fuel TankService part / kit Amazon eBay
RG10242Crankcase Ventilation AssemblyService part / kit Amazon eBay
RG5419Prevent Bypass Starting1Service part / kit Amazon eBay
RG6241Radiator Coolant CheckService part / kit Amazon eBay
RG6557DO5104ST TesterService part / kit Amazon eBay
RG8724Timing Gear Cover Fill PortService part / kit Amazon eBay
RG8727Upper Tensioner Spring TensionService part / kit Amazon eBay
RG8728Lower Tensioner Spring TensionService part / kit Amazon eBay
RG8751Oil Pan Adapter Fill PortService part / kit Amazon eBay
S203Handle Batteries SafelyService part / kit Amazon eBay FridayParts $24.89
T8953Avoid Flammable SprayService part / kit Amazon eBay
TS1356Store SafelyService part / kit Amazon eBay
TS187Understand Signal WordsService part / kit Amazon eBay
TS201Follow Safety Instructions1Service part / kit Amazon eBay
TS202Handle Fuel Safely—Avoid FiresService part / kit Amazon eBay
TS204Battery Explosions0Service part / kit Amazon eBay NAPA $32.48
TS206Wear Protective Clothing1Service part / kit Amazon eBay $1600.83 NAPA $24.94
TS207Protect Against Noise1Service part / kit Amazon eBay
TS220Remove Paint Before Welding or Heating1Service part / kit Amazon eBay $13.89 NAPA $26.31
TS226Use Proper Lifting Equipment1Service part / kit Amazon eBay NAPA $20.32
TS281Service Cooling System Safely0Service part / kit Amazon eBay NAPA $24.37
TS291Prepare for EmergenciesService part / kit Amazon eBay
X9811Avoid high-pressure fluids—avoid serious injury1Service part / kit Amazon eBay

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
Prime76.8420.3
Standby95.0125.1

Source — consumption: D375FRJ4.

Available documents

Spec sheet — D375FRJ4 (Katolight)

This page was generated from the 1 manufacturer document 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.

Fuel filter (primary) RE502203$30.00
1 priced item$30.00