Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | Primary | — | |||
| Oil filter | Cartridge | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
The John Deere 4045HFG04 is a 4.5 L 4-cylinder turbocharged, charge air-cooled engine rated at 1800 rpm, producing up to 99 kW. It powers generator sets from Generac and Kohler, including the MDG75DF4, 80REOZJ4 and 90REOZT4. It holds 21 L (5.5 gal) of oil and 26.1 L (6.9 gal) of coolant.
Also known as: John Deere 4045HFG04
Part of the John Deere 4045 engine family — 118 variants share parts & fitment.
The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.
Prices captured from merchant listings; some links are affiliate links. Verify against your serial number before ordering.
| Oil capacity | 21.0 L |
|---|---|
| Coolant capacity | 26.1 L |
| Displacement | 4.5 L |
| Cylinders | 4 |
| Aspiration | Turbocharged, Charge Air-Cooled |
| Rated speed | 1800 rpm |
| Gross power | 99 kW |
Shared across brands: Generac, Kohler
Compiled from service & troubleshooting documentation across every generator set that uses the John Deere 4045HFG04.
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | Primary | — | |||
| Oil filter | Cartridge | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Coolant | Other | 3 hr | 36 mo | Add coolant |
| DEF tank | Clean | 3 hr | 36 mo | |
| Fuel system | Other | 3 hr | 36 mo | Bleed fuel system |
| Fuses | Check | 3 hr | 36 mo | |
| Engine oil and oil filter | Change | 250 hr | First service — First change at 100 hours | |
| Oil vapor recirculation system/non-return valve | Check | 250 hr | ||
| Air intake hoses, connections and system | Check | 500 hr | 12 mo | |
| Automatic belt tensioner and belt wear | Check | 500 hr | 12 mo | |
| Cooling system | Check | 500 hr | 12 mo | |
| Engine electrical ground connection | Check | 500 hr | 12 mo | |
| Engine mounts | Check | 500 hr | 12 mo | |
| Fan belt | Inspect | 500 hr | 12 mo | Remove and check for wear; inspect pulleys/bearings |
| Generator drive plate torque | Check | 500 hr | 12 mo | |
| Leveling jacks | Lubricate | 500 hr | 12 mo | |
| Thermostats | Test | 500 hr | 12 mo | |
| Wheel bearings | Inspect | 500 hr | 12 mo | Increased inspection required under dusty or damp conditions |
| Trailer wheel bearings | Lubricate | 12 mo | or every 12,000 miles (19,312 km) |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Pressure | Oil pressure shutdown threshold | 5 | psi (34 kPa) | within five seconds of start |
| Speed | Low idle speed | 1,000-1,200 | rpm | |
| Speed | Ramp-up run speed | 1,800 | rpm | after 15 seconds at idle if idle switch OFF |
| Temperature | DEF freezing point | 12 | °F (-11°C) | |
| Temperature | DEF quality degrades above | 140 | °F (60°C) | |
| Temperature | Engine overheating shutdown threshold | 230 | °F | |
| Temperature | High coolant temperature shutdown | 210 | °F (99°C) | |
| Temperature | Maximum allowable coolant temperature limit | 235 | °F (113°C) | |
| Torque | Generator drive plate bolts | 40 | ft-lb (54 Nm) | |
| Torque | Trailer wheel lug nuts, first pass | 20-25 | ft-lb (27-33 Nm) | |
| Torque | Trailer wheel lug nuts, second pass | 50-60 | ft-lb (67-81 Nm) | |
| Torque | Trailer wheel lug nuts, third pass | 90-120 | ft-lb (122-162 Nm) |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | ethylene glycol antifreeze/water | 21.0 L (5.5 gal) | 50% water/50% antifreeze = -12°F(-24°C); 40/60 = -34°F(-36°C); max freeze protection 60% antifreeze = -54°F(-48°C) to -90°F(-67°C) | ||
| Def | AUS 32 per ISO 22241-1 | ISO 22241 / API DEF Certification / AdBlue | 41.6 L | 31.8-33.2% urea concentration; freezes below 12°F (-11°C); degrades above 140°F (60°C) | |
| Engine oil | John Deere Plus-50 / Plus-50 II; Torq-Gard Supreme; API CJ-4, CI-4 PLUS, CI-4, CH-4; ACEA E9, E7, E6, E5, E4 | API/ACEA | 15.0 L (3.92 gal, including filter) | 500-hour extended interval requires extended-drain oil pan, <2000 ppm sulfur fuel, John Deere Plus-50/Plus-50 II oil and approved filter | |
| Fuel | diesel | 641.85 L | Fuel tank capacity; usable 567.94 L |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Code | Name | Meaning | Severity | Action |
|---|---|---|---|---|
| Emergency Stop | Emergency Stop indicator LED | Emergency Stop switch is active (pushed in). | Shutdown | Deactivate (pull out) Emergency Stop switch. |
| Low Load | Low Load indicator LED | Genset has operated at less than 30% capacity for more than 15 minutes. | Warning | Increase electrical load or use a smaller generator. |
| Lug Door Open | Lug Door Open indicator LED | Lug-box door is open. | Warning | Close lug-box door; inspect door safety switch if unresolved. |
| Shutdown | Shutdown indicator LED | A shutdown alarm is present. | Shutdown | Resolve shutdown condition. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Tools: torque wrench
⚠ Do not attempt to start a unit in need of repair or scheduled maintenance
⚠ Carbon monoxide/asphyxiation hazard
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Part # | Description | Category |
|---|---|---|
| 10-20-08 | Net engine power is with standard equipment including air cleaner, exhaust system, alternator, and cooling fan at test conditions specified per ISO9249 No derating is required up to 5,000-ft. (1500 m) altitude. | Air filter |
| 100-001 | Air Filter | Air filter |
| 100-025 | Air Filter | Air filter |
| 24-20001 | Air Filter | Air filter |
| 24-20018 | Crankcase Breather Filter, Right hand | Air filter |
| 24-21000 | Air Filter | Air filter |
| 24-21003 | Air Filter | Air filter |
| 24-21406 | Air Filter | Air filter |
| 25-1476 | Air Filter Minders | Air filter |
| 25-1483 | Primary Air Cleaners | Air filter |
| 253108 | Element, air cleaner | Air filter |
| 29765 | Filter, air | Air filter |
| 301315 | Air Filter Element for Compressor | Air filter |
| 30561 | Element, air filter | Air filter |
| 30562 | Element, air filter safety | Air filter |
| 35393651 | Air Cleaner Element (Compressor) secondary - optional | Air filter |
| 35393685 | Air Cleaner Element (Compressor) primary | Air filter |
| AR79679 | Air Filter | Air filter |
| AR79680 | Filter Element | Air filter |
| AT203469 | Outer Element | Air filter |
| AT203470 | Inner Element | Air filter |
| AT203471 | Air Filter Assembly (Includes Keys #1-7) | Air filter |
| DZi05100 | CRANKCASE VENT SYSTEM OCV FILTER | Air filter |
| F1000000001 | Air Filter | Air filter |
| G030070 | Air Cleaner Element (Engine) Primary | Air filter |
| G030071 | Air Cleaner Element (Engine) Secondary | Air filter |
| G030073 | Air Cleaner Element (Engine) Primary | Air filter |
| G030074 | Air Cleaner Element (Engine) Secondary | Air filter |
| G030077 | Air Cleaner Element (Engine) Primary | Air filter |
| G030078 | Air Cleaner Element (Engine) Secondary | Air filter |
| G30070 | Air Cleaner Element (Engine) Primary | Air filter |
| GM100703 | Element, Primary | Air filter |
| GM100704 | Element, Safety | Air filter |
| GM94203 | Heavy Duty Air Cleaner | Air filter |
| P-130D-001 | Air Filter | Air filter |
| RE554812 | Filter Element | Air filter |
| 22-49441 | 12V/75A Alternator Standard Ground | Alternator |
| 22-49578 | Alternator 14 Volt 75 Amp Standard Ground (includes keys 2-3) | Alternator |
| 22-4958 | Alternator 28 Volt 50 Amp Standard Ground | Alternator |
| 22-49584 | Alternator 28 Volt 50 Amp Isolated | Alternator |
| 22-49586 | Alternator 50 Amp Standard Ground | Alternator |
| 22-49587 | Alternator 14 Volt / 75 Amp Isolated Ground (includes keys #8-9) | Alternator |
| 32910 | Alternator, engine | Alternator |
| AH137883 | ALTERNATOR (12V, 95A) | Alternator |
| AH165975 | ALTERNATOR | Alternator |
| AT173624 | Alternator 12 Volt 65 Amp | Alternator |
| AT387574 | ALTERNATOR | Alternator |
| DZ123153 | ALTERNATOR | Alternator |
| RE509080 | ALTERNATOR (12V, DENSO) | Alternator |
| RE533516 | ALTERNATOR | Alternator |
| RE533653 | ALTERNATOR | Alternator |
| RE533654 | ALTERNATOR | Alternator |
| RE537146 | ALTERNATOR (28V, 50A) (3142) | Alternator |
| RE537508 | ALTERNATOR | Alternator |
| RE540412 | ALTERNATOR (14V, 75A) (3148) | Alternator |
| RE540413 | ALTERNATOR (28V, 50A) (3149) | Alternator |
| RE554472 | (12V, 200A) (31AR) | Alternator |
| RE555751 | ALTERNATOR | Alternator |
| RE558675 | ALTERNATOR | Alternator |
| RE558676 | ALTERNATOR | Alternator |
| RE558678 | ALTERNATOR | Alternator |
| RES58675 | ALTERNATOR (24V, 60A) | Alternator |
| RM100225 | ALTERNATOR (REMAN FOR RE537146) (24 V, 50 A) (3104) | Alternator |
| SE501342 | ALTERNATOR (REMAN FOR AH137883) (12V, 95A) | Alternator |
| SE501343 | ALTERNATOR (REMAN FOR AH165975) (12V, 120A) (3103) | Alternator |
| SE501838 | ALTERNATOR (REMAN FOR AT387574) (24V, 100A) (3152) | Alternator |
| SE502561 | ALTERNATOR (REMAN FOR RE537508) | Alternator |
| SE502563 | ALTERNATOR | Alternator |
| SE502626 | ALTERNATOR (REMAN FOR RE533516) (12V, 75A) (3138) | Alternator |
| SE502627 | ALTERNATOR (REMAN FOR RE533653) (12V, 95A) (3140) | Alternator |
| SE502628 | ALTERNATOR (REMAN FOR RE533654) (12V, 120A) (3141) | Alternator |
| TY24322 | Alternator 24V/45 Amp | Alternator |
| RE536402 | SHORT BLOCK ASSEMBLY | Assembly |
| H144094 | Voltage Regulator | Avr |
| RE533942 | Regulator | Avr |
| RE567824 | Regulator (Not Shown) | Avr |
| DKA344JES | Baterías estándar (2), 12 V con 1700 A para arranque en frío, reserva nominal de 176 minutos | Battery |
| 100-024 | Belt | Belt |
| 100-085 | Belt | Belt |
| 33005 | Belt, fan/alternator | Belt |
| 40-09504 | Drive Belt, Poly-V 28 mm x 1523 mm | Belt |
| DZ112758 | (LGTH=1565 mm) (24GY) | Belt |
| DZ115812 | FAN BELT (LGTH = 1680 mm) | Belt |
| DZ117268 | FAN BELT (LGTH = 1530 mm) | Belt |
| DZ118265 | FAN BELT | Belt |
| DZ118558 | FAN BELT | Belt |
| DZ118559 | FAN BELT | Belt |
| DZ118560 | FAN BELT | Belt |
| DZ118562 | FAN BELT | Belt |
| DZ118563 | FAN BELT | Belt |
| DZ118564 | FAN BELT | Belt |
| DZ118606 | FAN BELT | Belt |
| DZ118648 | FAN BELT | Belt |
| DZ118649 | FAN BELT | Belt |
| DZ118650 | FAN BELT | Belt |
| DZ118652 | FAN BELT | Belt |
| DZ118654 | FAN BELT | Belt |
| DZ118768 | (LGTH=1535 mm) (24GR) | Belt |
| DZ119014 | (LGTH=2335 mm) (24HL) | Belt |
| DZ119059 | FAN BELT | Belt |
| DZ119060 | FAN BELT (LGTH = 1555 mm) | Belt |
| DZ119061 | FAN BELT (LGTH = 1540 mm) | Belt |
| DZ119385 | FAN BELT (LGTH = 1650 mm) | Belt |
| DZ119477 | FAN BELT (LGTH = 1565 mm) | Belt |
| DZ119478 | FAN BELT (LGTH = 1570 mm) | Belt |
| DZ119515 | FAN BELT | Belt |
| DZ119522 | FAN BELT | Belt |
| DZ119530 | FAN BELT (LGTH = 1675 mm) | Belt |
| DZ119970 | (LGTH=1550 mm) (24HA) | Belt |
| DZ124645 | FAN BELT | Belt |
| F1000000005 | Belt | Belt |
| GM66704-1 | Fan Belt (12V) | Belt |
| GM66704-2 | Fan Belt (24V) | Belt |
| JDG1341 | Belt Tension Gauge | Belt |
| JDG1520 | Belt Tension Tool (alternate method for engines without auxiliary drive) | Belt |
| R123439 | Drive Belt, LP-MP445D (non-turbo) | Belt |
| R123440 | Drive Belt, LP-M445T-H (with turbo) | Belt |
| R123451 | Drive Belt, M1064H, NL1064H1 (with turbo - all) | Belt |
| R123454 | Drive Belt, NL668T2 (with turbo) | Belt |
| R123457 | Drive Belt LP-MP668T-H (with turbo, formerly #R123464) | Belt |
| R123461 | Drive Belt, L-M-NL1064D (non-turbo) | Belt |
| R123462 | Drive Belt, NL445T1-T2 (with turbo) | Belt |
| R123463 | Drive Belt, NL445D1 (non-turbo) | Belt |
| R500277 | FAN BELT | Belt |
| R523124 | V-Belt | Belt |
| R524006 | V-Belt | Belt |
| R525434 | FAN BELT (LGTH = 2180 mm) | Belt |
| R525435 | FAN BELT (LGTH = 2190 mm) | Belt |
| R533596 | FAN BELT | Belt |
| RE518097 | Belt Tensioner | Belt |
| RE70536 | Belt Tensioner | Belt |
| T428692 | FAN BELT (LGTH = 1665 mm) | Belt |
| T428712 | (LGTH=2400 mm) (24GS) | Belt |
| T428820 | FAN BELT (LGTH = 1580 mm) | Belt |
| T428825 | FAN BELT | Belt |
| T429109 | FAN BELT (LGTH = 1660 mm) | Belt |
| SE501794 | COMPLETE 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 |
| SE501795 | COMPLETE 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 |
| SE503065 | AC COMPRESSOR (REMAN FOR AH169875) (12V, 10PA) (7427, 7414) | Compressor |
| F100-570 | CONTROL BOX ASSEMBLY | Control box |
| SE502802 | CONTROLLER (REMAN FOR RE526588) (24V/12V, LEVEL 16) (16A5) | Controller |
| 100-037 | Coolant Filter | Coolant filter |
| 100-060 | Coolant Filter | Coolant filter |
| F1000000004 | Coolant Filter | Coolant filter |
| 5070M | Engine | Engine |
| 5080G | Engine | Engine |
| 5080M | Engine | Engine |
| 5080R | Engine | Engine |
| 5090G | Engine | Engine |
| 5090M | Engine | Engine |
| 5090R | Engine | Engine |
| 5100M | Engine | Engine |
| 5100R | Engine | Engine |
| M-RE527298 | Engine Overhaul Non-Cert, T1, T2 | Engine |
| M-RE527299 | Engine Overhaul Non-Cert, T1, T2 | Engine |
| R116466 | Bushing | Engine |
| R119874 | Bushing | Engine |
| R132518 | Plate | Engine |
| R26650 | Dowel Pin | Engine |
| R48685 | Dowel Pin | Engine |
| RE508185 | Drain Plug | Engine |
| T18891 | Plug | Engine |
| F100-790 | ENGINE OPERATING PANEL ASSEMBLY | Engine operating panel |
| F100-680 | ENGINE & RADIATOR ASSEMBLY | Engine radiator |
| 20-00002 | Pint - Part Number...............20-00002 | Fluid |
| 20-00003 | 1/2 gallon - Part Number.....20-00003 | Fluid |
| 22252050 | IR XHP605 55 Gal. (208 litres) | Fluid |
| 22252068 | IR XHP605 220 Gal. (836 litres) | Fluid |
| 22252076 | IR XHP605 compressor fluid, 5 gal. (19.0 Litre) | Fluid |
| 22252100 | XHP405 55 Gal. (208 litres) | Fluid |
| 22252118 | IR XHP1001 220 Gal. (836 litres) | Fluid |
| 22252126 | IR XHP405 compressor fluid, 5 gal. (19.0 Litre) | Fluid |
| 24952 | Jug, overflow 2.5 qt | Fluid |
| 35300516 | IR XHP1001 55 Gal. (208 litres) | Fluid |
| 35612738 | IR XHP1001 compressor fluid, 5 gal. (19.0 Litre) | Fluid |
| 36866903 | Engine Oil (55 gal) | Fluid |
| 36875938 | Engine Oil (5 gal) | Fluid |
| 36899698 | IR Pro-Tec 1 gal. (3.8 litre) | Fluid |
| 36899706 | IR Pro-Tec 5 Gal. (19.0 litres) | Fluid |
| 36899714 | IR Pro-Tec 55 Gal. (208 litres) | Fluid |
| 36899722 | IR Pro-Tec 220 Gal. (836 litres) | Fluid |
| 54480918 | Engine Oil, 1 gal. (3.8 Litre) | Fluid |
| G122208 | Clarke Eng Fluid - 5 gal | Fluid |
| G122209 | Clarke Eng Fluid -1 gal | Fluid |
| PT507 | John Deere Multi-Purpose Grease | Fluid |
| TY22041 | John Deere ENGINE BREAK-IN OIL (SAE 10W-30) | Fluid |
| TY6333 | JD Moly High Temp Grease | Fluid |
| 100-026 | Fuel Filter | Fuel filter |
| 100-045 | Fuel Filter | Fuel filter |
| 24-51003 | Fuel Filter without Drain Valve | Fuel filter |
| 24-51004 | Fuel Filter with Plastic Drain Valve | Fuel filter |
| 24-51005 | Fuel Filter with Metal Drain Valve | Fuel filter |
| 24-52259 | Fuel filter | Fuel filter |
| 25-1639 | Fuel Filters | Fuel filter |
| 26379 | Vent, plastic fuel 1.00 ID | Fuel filter |
| 29877 | Heater, fuel filter | Fuel filter |
| 32911 | Filter, fuel - primary and secondary | Fuel filter |
| 33023 | Filter, fuel - final | Fuel filter |
| 33024 | Filter, fuel - primary | Fuel filter |
| 36534659 | Engine Fuel Filter Element | Fuel filter |
| 65631 | Gauge, fuel - elec w/light | Fuel filter |
| CO2775 | Element, Fuel Water Separator | Fuel filter |
| CO2776 | Element, Fuel Filter Primary | Fuel filter |
| DZ115390 | SECONDARY FUEL FILTER | Fuel filter |
| DZ115391 | PRIMARY FUEL FILTER | Fuel filter |
| DZ128543 | PRIMARY FUEL FILTER | Fuel filter |
| F1000000003 | Fuel Filter | Fuel filter |
| G021199 | Element, Fuel Filter Primary | Fuel filter |
| GM50006 | Fuel Filter | Fuel filter |
| GM50074 | Fuel Filter (primary) | Fuel filter |
| P-205-003 | Fuel Filter | Fuel filter |
| RE509031 | Filter Element | Fuel filter |
| RE509032 | Filter Element | Fuel filter |
| RE509036 | Fuel Filter | Fuel filter |
| RE509208 | Filter Element (also order R113565) | Fuel filter |
| RE5092082 | Fuel filter | Fuel filter |
| RE516999 | Screen | Fuel filter |
| RE519031 | Fuel filter | Fuel filter |
| RE521537 | Fuel Filter Assembly | Fuel filter |
| RE521538 | Filter Element | Fuel filter |
| RE521539 | Filter | Fuel filter |
| RE521540 | Fuel Filter | Fuel filter |
| RE521541 | Fuel Filter | Fuel filter |
| RE522868 | Fuel Filter | Fuel filter |
| RE522878 | Fuel filter | Fuel filter |
| RE526834 | Filter Kit | Fuel filter |
| RE541922 | PRIMARY FUEL FILTER | Fuel filter |
| RE544394 | FINAL FUEL FILTER | Fuel filter |
| RG11830A | Final Fuel Filter/Water Separator Base | Fuel filter |
| RG11830C | Replace Final Fuel Filter/Water Separator | Fuel filter |
| RG9091 | Final Fuel Filter Assembly | Fuel filter |
| RG12000 | Injection Pump Drive Gear Removal | Fuel pump |
| RG12002 | Injection Pump | Fuel pump |
| RG12022 | Fuel Supply Pump Push Rod | Fuel pump |
| RG12036 | JDG1559 Injection Pump Timing Pin | Fuel pump |
| RG4906 | Fuel injection pump model and serial information on serial number plate | Fuel pump |
| RG7629B | Injection Pump Timing Marks A—Timing Mark on Front Plate B—Timing Mark on Injection Pump Flange | Fuel pump |
| RG7722 | Fuel Injection Pump | Fuel pump |
| RG9051 | Fuel Supply Pump Lines | Fuel pump |
| 0000I00 | Fuel Solenoid | Fuel solenoid |
| 11-21011 | Gasket | Gasket |
| 11-31012 | Gasket | Gasket |
| 11-31031 | Gasket, Turbo Oil Return | Gasket |
| 11-31094 | Gasket | Gasket |
| 11-31099 | Gasket | Gasket |
| 11-31401 | Gasket, K26 Turbo Mounting | Gasket |
| 11-31615 | Gasket | Gasket |
| 11-79501 | Gasket,Oil Filler & Block-Off Plate Mtg | Gasket |
| 14-31042 | Gasket | Gasket |
| 18648 | Cap, fuel fill with gasket | Gasket |
| 19238 | Gasket, fuel fill | Gasket |
| 22323 | Gasket, fuel sending unit | Gasket |
| 25-11017 | Gasket | Gasket |
| 29-09400 | Gasket Set (Engine Overhaul, includes all keys) | Gasket |
| 29-09402 | Gasket Set (Engine Overhaul, includes all keys) | Gasket |
| 33265 | Gasket, 3.0 exhaust pipe flange | Gasket |
| 4194-21011 | Gasket | Gasket |
| 44-31031 | Gasket | Gasket |
| 44-31401 | Gasket | Gasket |
| 65626 | Gasket—Oil Filler Cap | Gasket |
| 65629 | Cylinder Head Assembly consisting of IA-C Cylinder Head, EA45 Exhaust Valve Spring, EA57 Valve Spring Gasket, EA65 Exhaust Valve, 65562 Valve Spring Washers, EA38 Valve Spring Cup, EA34 Valve Spring Washer | Gasket |
| CAMSET000301 | CAM(WITH BOLT,GASKET) | Gasket |
| FP-RE37715-WS | Gasket Set, Complete Overhaul w/Front and Rear Seals | Gasket |
| M-RE532713 | Gasket Set - Overhaul | Gasket |
| M-RE532842 | Gasket Set - Cyl Head | Gasket |
| M-RE536967 | Gasket Set - Cyl Head | Gasket |
| PG219S | Gasket Set, In-frame Overhaul | Gasket |
| PG301PS | Gasket Set, Oil Pan | Gasket |
| R108612 | Gasket | Gasket |
| R108730 | Gasket | Gasket |
| R108848 | Gasket | Gasket |
| R116515 | Engine Cylinder Head Gasket | Gasket |
| R116516 | Engine Cylinder Head Gasket | Gasket |
| R123226 | Gasket, Water By-pass Tube | Gasket |
| R123345 | Gasket, Thermostat Housing | Gasket |
| R123352 | Gasket | Gasket |
| R123353 | Gasket | Gasket |
| R123354 | Gasket, Engine Oil Pan | Gasket |
| R123417 | Gasket, Water Pump | Gasket |
| R123501 | Gasket | Gasket |
| R123504 | Gasket, Remote Oil Filter Adapter | Gasket |
| R123525 | Gasket | Gasket |
| R123542 | Gasket, Rocker Arm Cover Mounting | Gasket |
| R123543 | Gasket, Rocker Arm Cover | Gasket |
| R123570 | Gasket | Gasket |
| R123572 | Gasket | Gasket |
| R123676 | Gasket | Gasket |
| R125670 | Gasket | Gasket |
| R133893 | Gasket | Gasket |
| R134465 | Gasket | Gasket |
| R135896 | Gasket | Gasket |
| R136495 | Gasket | Gasket |
| R136516 | Gasket, Timing Gear Cover | Gasket |
| R47693 | Gasket | Gasket |
| R500374 | Gasket | Gasket |
| R501428 | Gasket | Gasket |
| R505174 | Gasket | Gasket |
| R521158 | Turbo Gasket | Gasket |
| R521493 | Gasket | Gasket |
| R522690 | Gasket | Gasket |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.
Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.
The John Deere 4045HFG04 engine has an oil capacity of 21.0 liters.
The John Deere 4045HFG04 has a displacement of 4.5 liters with 4 cylinders.
The John Deere 4045HFG04 powers 3 generator set(s), including Generac MDG75DF4, Kohler 80REOZJ4, Kohler 90REOZT4.
The John Deere 4045HFG04 uses oil filter part numbers Kohler GM32809, Kohler 360031, John Deere RE519987.
The John Deere 4045HFG04 uses fuel filter part numbers Kohler GM50006, Kohler 336661, Kohler GM48727.
A commonly reported issue on generators using the John Deere 4045HFG04 is: Overcrank Shutdown. Cause: Fuel level low. Fix: Check fuel level in tank..