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Home›Engines›John Deere 4045HFG09

John Deere 4045HFG09 Engine Engine

The John Deere 4045HFG09 is a 4.5 L 4-cylinder turbocharged charge air cooled engine rated at 1800 rpm, producing up to 124 kW. It powers generator sets from Kohler, including the 100REOZJ4 and 120REOZT4. It holds 21 L (5.5 gal) of oil and 26.1 L (6.9 gal) of coolant.

Also known as: John Deere 4045HFG09

Part of the John Deere 4045 engine family — 70 variants share parts & fitment.

4.5 L
Displacement
4
Cylinders
1800 rpm
Rated speed
124 kW
Gross power

Engine specifications

Oil capacity21.0 L
Coolant capacity26.1 L
Displacement4.5 L
Cylinders4
AspirationTurbocharged Charge Air Cooled
Rated speed1800 rpm
Gross power124 kW

Generator sets powered by this engine

2
Kohler 100REOZJ4Kohler 120REOZT4

Parts cataloged across the John Deere 4045 family

300
Part #DescriptionCategory
100-025Air Filterair_filter
253108Element, air cleanerair_filter
301315Air Filter Element for Compressorair_filter
DZi05100CRANKCASE VENT SYSTEM OCV FILTERair_filter
F1000000001Air Filterair_filter
G030070Air Cleaner Element (Engine) Primaryair_filter
G030071Air Cleaner Element (Engine) Secondaryair_filter
G030073Air Cleaner Element (Engine) Primaryair_filter
G030074Air Cleaner Element (Engine) Secondaryair_filter
G030077Air Cleaner Element (Engine) Primaryair_filter
G030078Air Cleaner Element (Engine) Secondaryair_filter
G30070Air Cleaner Element (Engine) Primaryair_filter
GM100703Element, Primaryair_filter
GM100704Element, Safetyair_filter
GM94203Heavy Duty Air Cleanerair_filter
DZ123153ALTERNATOR (12V, 90A)alternator
RE509080ALTERNATOR (12V, DENSO)alternator
RE533516ALTERNATOR (12V, 75A)alternator
RE533653ALTERNATOR (12V, 95A)alternator
RE533654ALTERNATOR (12V, 120A)alternator
RE537146ALTERNATOR (24V, 50A)alternator
RE537508ALTERNATORalternator
RE555751ALTERNATORalternator
RE558675ALTERNATORalternator
RE558676ALTERNATORalternator
RE558678ALTERNATORalternator
RES58675ALTERNATOR (24V, 60A)alternator
RM100225ALTERNATOR (REMAN FOR RE537146) (24V, 50A) (3104)alternator_reman
SE502626ALTERNATOR (REMAN FOR RE533516) (12V, 75A) (3109, 3122, 3115)alternator_reman
SE502627ALTERNATOR (REMAN FOR RE533653) (12V, 95A) (3107)alternator_reman
SE502628ALTERNATOR (REMAN FOR RE533654) (12V, 120A) (3108)alternator_reman
RE536402SHORT BLOCK ASSEMBLYassembly
100-024Beltbelt
DZ118265FAN BELT (LGTH = 1805 mm)belt
DZ118558FAN BELT (LGTH = 1680 mm)belt
DZ118559FAN BELT (LGTH = 1700 mm)belt
DZ118560FAN BELT (LGTH = 1720 mm)belt
DZ118562FAN BELT (LGTH = 1775 mm)belt
DZ118563FAN BELT (LGTH = 1785 mm)belt
DZ118564FAN BELT (LGTH = 1790 mm)belt
DZ118606FAN BELT (LGTH = 1798 mm)belt
DZ118648FAN BELT (LGTH = 1810 mm)belt
DZ118649FAN BELT (LGTH = 1815 mm)belt
DZ118650FAN BELT (LGTH = 1820 mm)belt
DZ118654FAN BELTbelt
DZ119059FAN BELT (LGTH = 1515 mm)belt
DZ119060FAN BELT (LGTH = 1555 mm)belt
DZ119061FAN BELT (LGTH = 1540 mm)belt
DZ119385FAN BELT (LGTH = 1650 mm)belt
DZ119477FAN BELT (LGTH = 1565 mm)belt
DZ119478FAN BELT (LGTH = 1570 mm)belt
DZ119515FAN BELT (LGTH = 1585 mm)belt
DZ119522FAN BELT (LGTH = 1630 mm)belt
F1000000005Beltbelt
R525434FAN BELT (LGTH = 2180 mm)belt
R525435FAN BELT (LGTH = 2190 mm)belt
R533596FAN BELT (LGTH = 1780 mm)belt
T428820FAN BELT (LGTH = 1580 mm)belt
SE501794COMPLETE BLOCK ASSEMBLY (without auxilary drive may not be as illustrated. Includes cylinder head with valves and rocker arm assembly, balancer shafts, oil pump assembly, complete gasket kit with front and rear seals)block_assembly_reman
SE501795COMPLETE BLOCK ASSEMBLY (auxiliary drive may not be as illustrated. Includes cylinder head with valves and rocker arm assembly, balancer shafts, oil pump assembly, complete gasket kit with front and rear seals)block_assembly_reman
SE503064AC COMPRESSOR (REMAN FOR AT172975) (24V, 10PA) (7411, 7413)compressor_reman
SE503065AC COMPRESSOR (REMAN FOR AH169875) (12V, 10PA) (7427, 7414)compressor_reman
SE501096CONNECTING ROD (REMAN FOR RE500002) (4843)connecting_rod_reman
F100-570CONTROL BOX ASSEMBLYcontrol_box
100-037Coolant Filtercoolant_filter
F1000000004Coolant Filtercoolant_filter
SE501806CYLINDER HEAD (REMAN FOR RE531088) (5127)cylinder_head_reman
F100-790ENGINE OPERATING PANEL ASSEMBLYengine_operating_panel
F100-680ENGINE & RADIATOR ASSEMBLYengine_radiator
G122208Clarke Eng Fluid - 5 galfluid
G122209Clarke Eng Fluid -1 galfluid
100-026Fuel Filterfuel_filter
CO2775Element, Fuel Water Separatorfuel_filter
CO2776Element, Fuel Filter Primaryfuel_filter
F1000000003Fuel Filterfuel_filter
G021199Element, Fuel Filter Primaryfuel_filter
RE522868FINAL FUEL FILTERfuel_filter
RE541922PRIMARY FUEL FILTERfuel_filter
RE544394SECONDARY FUEL FILTERfuel_filter
RG11830AFinal Fuel Filter/Water Separator Basefuel_filter
RG11830CReplace Final Fuel Filter/Water Separatorfuel_filter
RG9091Final Fuel Filter Assemblyfuel_filter
RG12000Injection Pump Drive Gear Removalfuel_pump
RG12002Injection Pumpfuel_pump
RG12036JDG1559 Injection Pump Timing Pinfuel_pump
RG7629BInjection Pump Timing Marks A—Timing Mark on Front Plate B—Timing Mark on Injection Pump Flangefuel_pump
RG7722Fuel Injection Pumpfuel_pump
0000I00Fuel Solenoidfuel_solenoid
R136495Gasketgasket
R524468Gasketgasket
F100-460GENERATOR ASSEMBLYgenerator
F100-800GENERATOR ASSEMBLYgenerator
GM62396Hose, Reducerhose
302600Air/Oil Coalescer Element, spin-on canisterhydraulic_filter
RG12001Injector Pump Electrical Connector Removalinjector
F100-350NAME PLATE AND DECALSnameplate
100-034Oil Filteroil_filter
223604Filter, oiloil_filter
223673Filter, oiloil_filter
302601Oil Filter Element for Compressoroil_filter
C04521Element, Oil Filteroil_filter
F1000000002Oil Filteroil_filter
RE504836OIL FILTERoil_filter
006226other_service
10000015220Panel, rearother_service
10000015222Duct, rearother_service
10000024262Decal, phase switch warningother_service
10000024936Right rear corner assemblyother_service
10000024948Front hood assemblyother_service
10000024956Rear panel assemblyother_service
10000024971Foam, duct - sideother_service
10000024974Foam, rear duct - rightother_service
10000024975Left rear corner assemblyother_service
10000024976Left rear door assemblyother_service
10000024982Foam, control doorother_service
10000024983Foam, rear ductother_service
10000024994Foam, rear duct - leftother_service
10000025002Foam, rear panelother_service
10000027288Door, control - paralleling optionother_service
10000029864Decal set, MDG75 mechanical groupother_service
10000030536Foam, control door - paralleling optionother_service
10000030555Right rear corner assembly - parallelingother_service
10000030564End panel assemblyother_service
10000030582Control door assembly - parallelingother_service
100REOZJ4Stationary non-emergency gen-setsother_service
12142Decal, groundother_service
19M7838Screwother_service
19M7862Screwother_service
19M8306Screwother_service
200389Frame & Parts, GC-40 JD4045 T3other_service
200390Engine & Parts, GC-40 JD4045 T3other_service
200391Generator & Parts, GC-40 JD4045 T3other_service
200392Radiator & Parts, GC-40 JD4045 T3other_service
200393Instruments & Parts, GC-40 JD4045 T3other_service
200394Gator & Parts, GC-40 JD4045 T3other_service
200395Compressor & Parts, GCRS-40-40 JD4045 T3other_service
200396Cooler & Parts, GCRS-40-40 JD4045 T3other_service
200403Decal & Parts, GCRS-40-40 JD4045 T3other_service
20677WDuct, rear airother_service
20795SRVFoam, corner commonother_service
20798SRVFoam, duct - faceother_service
20916ZBracket, prop rodother_service
26386Decal, pinch pointother_service
2911200025Standard P/Nother_service
2911200026Cold Start P/Nother_service
2911200027Standard P/Nother_service
2911200028Cold Start P/Nother_service
30401WPanel, endother_service
30402SRVFoam, end panelother_service
30645Panel, emergency stopother_service
307398Relief Valve (drawn as 39124)other_service
310-537-3700Warranty Departmentother_service
310-637-3284Parts Departmentother_service
310-638-8046Warranty Departmentother_service
32107WPanel, left rearother_service
32124WPanel, sideother_service
32125SRVRoof assemblyother_service
32286SRVFoam, side panelother_service
33313SRVControl door assemblyother_service
33642Window, control door - UVother_service
34989SRVAssembly, E-stop switchother_service
393531Side panel assemblyother_service
46606373other_service
50876Decal, positive battery disconnectother_service
51552Decal, high tempother_service
5E502446REMAN CYLINDER HEAD (FOR DZ103843)other_service
5E502450REMAN CYLINDER HEAD (FOR DZ103845)other_service
60095Nut, .312-18 serrated flangeother_service
60268Rivet, .188 diameter. x .126 to .250 grip, SSother_service
60505Nut, .312-18 U-clip - long typeother_service
61091Screw, .312-18 x 1.0 serrated flange hex, G5other_service
61371Optional Rear Shaft Guard, GC-40 JD4045 T3other_service
65470Switch, E-stop operatorother_service
65580Block, E-stop contactorother_service
800-421-1244Mainother_service
800-427-1244Parts Departmentother_service
800-672-7877Parts Departmentother_service
800-835-2551Warranty Departmentother_service
80REOZJ4Stationary non-emergency gen-setsother_service
9753300442Oil sample kitother_service
AR106083Plugother_service
AV128738-01Gother_service
AV136495-01Gother_service
AV136822-02Gother_service
AV137102-01Gother_service
AV143408-01Gother_service
C07575DC Engine Wiringother_service
C07651AC Heater Wiringother_service
DCA-70USJBattery Connectionsother_service
DCA-85USJBattery Connectionsother_service
DZ105796OCV FILTER ELEMENTother_service
DZ109713SHORT BLOCK ASSEMBLYother_service
DZ109717SHORT BLOCK ASSEMBLYother_service
F100-250WINGSother_service
F100-260WINGSother_service
F18910WAV65AName Plate And Decalsother_service
F18910WAV66AGenerator Assemblyother_service
F18910WAV70AControl Box Assemblyother_service
F18910WAV76AEngine & Radiator Assemblyother_service
F18910WAV80AEngine Operating Panel Assemblyother_service
F18910WAV84AOutput Terminal Assemblyother_service
F18910WAV86ABattery Assemblyother_service
F18910WAV88AMuffler Assemblyother_service
F18910WAV90AFuel Tank Assemblyother_service
F18910WAV96AEnclosure Assemblyother_service
F18910WAV98ARadiator Cap - Removing the radiator cap while the engine is hot will result in high pressurized, boiling water to gush out of the radiator, causing severe scalding to any persons in the general area of the generator.other_service
F18910WAV99ACoolant Drain Plug - Removing the coolant drain plug while the engine is hot will result in hot coolant to gush out of the coolant drain plug, therefore causing severe scalding to any persons in the general area of the generator.other_service
F18910WAVA0AEngine Oil Drain Plug - Removing the engine oil drain plug while the engine is hot will result in hot oil to gush out of the oil drain plug, therefore causing severe scalding to any persons in the general area of the generator.other_service
G122188250 hour Maintenance Kit (without fluids)other_service
G122189250 hour Maintenance Kit (without fluids)other_service
G122190250 hour Maintenance Kit (without fluids)other_service
G122191250 hour Maintenance Kit (without fluids)other_service
G122192250 hour Maintenance Kit (without fluids)other_service
G122193250 hour Maintenance Kit (& engine fluids)other_service
G122194250 hour Maintenance Kit (& engine fluids)other_service
G122195250 hour Maintenance Kit (& engine fluids)other_service
G122196250 hour Maintenance Kit (& engine fluids)other_service
G122197250 hour Maintenance Kit (& engine fluids)other_service
G122198500 hour Maintenance Kit (without fluids)other_service
G122199500 hour Maintenance Kit (without fluids)other_service
G122200500 hour Maintenance Kit (without fluids)other_service
G122201500 hour Maintenance Kit (without fluids)other_service
G122202500 hour Maintenance Kit (without fluids)other_service
G122203500 hour Maintenance Kit (& Engine fluids)other_service
G122204500 hour Maintenance Kit (& Engine fluids)other_service
G122205500 hour Maintenance Kit (& Engine fluids)other_service
G122206500 hour Maintenance Kit (& Engine fluids)other_service
G122207500 hour Maintenance Kit (& Engine fluids)other_service
GM32386-KP1Exhaust Silencer, Hospitalother_service
H23125Plugother_service
LX1016749Construct Dealer-Made Tools Safelyother_service
M2870400114other_service
M2872300204Parts List No. M2872300204other_service
R113480FAN PULLEY (OD=171 mm)other_service
R116296Coverother_service
R123574Nutother_service
R128661FAN PULLEY (OD=183 mm)other_service
R131765Plugother_service
R135918Boltother_service
R503447Housingother_service
R503880CRANKSHAFT PULLEY & DAMPER (OD=189 mm)other_service
R515040Bushingother_service
R516648Cap Screwother_service
R517208Pulleyother_service
R517237Bushingother_service
R520896Valve Coverother_service
R521326Valve Coverother_service
R521327Valve Coverother_service
R521401Medallionother_service
R522409Heat Shieldother_service
R545125CRANKSHAFT PULLEY & DAMPER (OD=193 mm)other_service
RE501377Filler Neckother_service
RE527858Screw M6 x 12other_service
RE528742Deflectorother_service
RE535560Filler Capother_service
RE67238Screwother_service
RE67239Screwother_service
RG11931Right Side of Engineother_service
RG11932Left Side of Engineother_service
RG12003Disconnect Fuel Delivery Linesother_service
RG7778UN—11NOV97other_service
RG9060UN—16MAR98other_service
RG9061UN—16MAR98other_service
RG9062UN—16MAR98other_service
RM100171COMPLETE BLOCK ASSEMBLYother_service
SE501094REMAN CONNECTING ROD (FOR RE500608)other_service
SE502447REMAN CYLINDER HEAD (FOR DZ103844)other_service
T6642EJUN—18OCT88other_service
TS1133UN—26NOV90other_service
TS206UN—23AUG88other_service
TS218UN—23AUG88other_service
TS223UN—23AUG88other_service
TS226UN—23AUG88other_service
TS227UN—23AUG88other_service
TS228UN—23AUG88other_service
TS231UN—19—07OCT88other_service
TS779UN—08NOV89other_service
TS953UN—15MAY90other_service
DCA-70SSJUGenerator Outputsoutput_terminal
F100-910OUTPUT TERMINALSoutput_terminals
RE520374Piston marked RE520589; also order RE527042 and DD15664; also order R503880, R515040 and R516648 or R505567, R515040 and R516648.piston
RE520375Piston marked RE515372; also order RE527042 and DD15664; also order R503880, R515040 and R516648 or R505567, R515040 and R516648.piston
RE571269Piston marked RE509540; SUB FOR RE65957; also order RE527042 and DD15664; also order R503880, R515040 and R516648 or R505567, R515040 and R516648.piston
R128658FAN PULLEY (OD = 140 mm)pulley
R128659FAN PULLEY (OD=154 mm)pulley
R128660FAN PULLEY (OD=168 mm)pulley
R128662FAN PULLEY (OD=203 mm)pulley
R503567FAN PULLEY (OD = 126 mm)pulley
R505567Pulleypulley
R545126CRANKSHAFT PULLEY (OD = 168 mm)pulley
RG11991Fuel Supply Pumppump
RG12022Fuel Supply Pump Push Rodpump
RG7630APump Drive Gear Retaining Nut A—Drive Gear Retaining Nutpump
RG9051Fuel Supply Pump Linespump
SE502769REMAN FUEL INJECTION PUMP (FOR RE543423)pump
SE502816REMAN WATER PUMP (FOR RE546918)pump
SE501610WATER PUMP (REMAN FOR RE546917) (4428, 4429)pump_reman
SE501814REMAN OIL PUMP (FOR DZ100057)pump_reman
SE501980FUEL INJECTION PUMP (REMAN FOR RE531803) (16E9, 16T6)pump_reman
SE501982FUEL INJECTION PUMP (REMAN FOR RE531810) (16G3)pump_reman

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Aftermarket parts that fit this engine

60
RE548703 PartsGeek FridayParts $47.25 130G PartsGeek yemparts $35.22 160GLC PartsGeek yemparts $100.19 180GLC PartsGeek yemparts $50.16 210G PartsGeek yemparts $42.80 250GLC PartsGeek yemparts $42.92 290GLC PartsGeek yemparts $42.92 300GLC PartsGeek sinocmp $39.00 RE543423 PartsGeek FridayParts $533.11 294000-1540 PartsGeek FridayParts $533.11 5085E PartsGeek yemparts $67.88 5090R PartsGeek yemparts $46.88 5100M PartsGeek 5125R PartsGeek vbeltguys $11.20 6105E PartsGeek yemparts $1279.98 6120R PartsGeek yemparts $47.70 6130D PartsGeek yemparts $55.20 6140D PartsGeek yemparts $233.77 6215R PartsGeek DZ111140 PartsGeek woodline $309.79 RE543767 PartsGeek yemparts $98.82 310K PartsGeek yemparts $55.87 410K PartsGeek yemparts $55.87 210K PartsGeek yemparts $72.24 605K PartsGeek yemparts $378.96 344K PartsGeek yemparts $243.24 444K PartsGeek yemparts $49.74 544G PartsGeek yemparts $59.29 550K PartsGeek yemparts $310.55 650K PartsGeek yemparts $49.06 200G PartsGeek yemparts $100.19 RE507670 PartsGeek kuduparts $130.00 SE501851 PartsGeek kuduparts $130.00 AT203469 PartsGeek kuduparts $49.00 AT222722 PartsGeek kuduparts $49.00 710J PartsGeek yemparts $61.33 324H PartsGeek yemparts $53.28 337E PartsGeek 437E PartsGeek yemparts $49.06 444H PartsGeek yemparts $58.40 544H PartsGeek yemparts $112.59 R502983 PartsGeek FridayParts $107.60 605C PartsGeek yemparts $49.74 DZ100021 PartsGeek FridayParts $144.15 RE521756 PartsGeek FridayParts $144.15 6105M PartsGeek 7215J PartsGeek yemparts $214.81 6110B PartsGeek yemparts $974.39 6145M PartsGeek DZ120069 PartsGeek FridayParts $34.50 120D PartsGeek yemparts $42.92 160DLC PartsGeek yemparts $42.92 240DLC PartsGeek yemparts $100.19 2454D PartsGeek yemparts $50.81 270DLC PartsGeek yemparts $50.81 RE523169 PartsGeek FridayParts $92.30 1070D PartsGeek yemparts $125.81 1070E PartsGeek yemparts $52.61 1170E PartsGeek yemparts $52.61 100A PartsGeek dieselpartscenter $2.44

Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.

Common questions

What is the oil capacity of the John Deere 4045HFG09?

The John Deere 4045HFG09 engine has an oil capacity of 21.0 liters.

What is the displacement of the John Deere 4045HFG09?

The John Deere 4045HFG09 has a displacement of 4.5 liters with 4 cylinders.

Which generators use the John Deere 4045HFG09 engine?

The John Deere 4045HFG09 powers 2 generator set(s), including Kohler 100REOZJ4, Kohler 120REOZT4.