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John Deere 6068HFG06 Engine

The John Deere 6068HFG06 is a 6.8 L 4-cylinder turbocharged engine rated at 1800 rpm, producing up to 257 kW. It powers generator sets from Generac and Hipower, including the MDG250 and HRJW-240 T4F. It holds 34 L (9.0 gal) of oil and 42 L (11.1 gal) of coolant.

Also known as: JOHN DEERE 6068HFG06

Part of the John Deere 6068 engine family — 92 variants share parts & fitment.

6.8 L

Displacement

Cylinders

1800 rpm

Rated speed

257 kW

Gross power

On this pageSpecs Generator sets FAQ Service intervals Torque & specs Fluids Procedures Wiring

Engine specifications

Oil capacity	34.0 L
Coolant capacity	42.0 L
Displacement	6.8 L
Cylinders	4
Aspiration	Turbocharged
Rated speed	1800 rpm
Gross power	257 kW

Generator sets powered by this engine

Shared across brands: Generac, Hipower

Generac MDG250 Hipower HRJW-240 T4F

How to read your John Deere engine serial & model number →

Common problems

Low fuel level shutdown
Cause: Low fuel level
Fix: Check fuel level on controller.
Low oil pressure shutdown
Cause: Low oil level
Fix: Check oil level on dipstick. Add oil if needed.
Low coolant level shutdown
Cause: Low coolant level
Fix: Allow engine to cool, then check coolant level in radiator. Add coolant if needed.
High coolant temperature shutdown
Cause: Low coolant level
Fix: Add coolant if needed. Allow engine to cool, then check coolant level in radiator. Restart engine and check coolant temperature (on controller). Stop engine immediately if coolant temperature is 210 °F (99 °C) or higher.
Overcrank shutdown
Cause: Fuel level low
Fix: Check fuel level in tank.; Check fuel pump operation.; Check air filter for blockage.; See the OEM engine operator’s manual for additional information.
Indicates a fault state. The DVR stops providing excitation. FXXX

Compiled from service & troubleshooting documentation across every generator set that uses the John Deere 6068HFG06.

Service intervals

Item	Action	Hours	Months	Notes
maintenance alarm reset	Other	250 hr		Maintenance/service interval warning set at 250, 500 and 3,000 hours of engine running time
Automatic belt tensioner and belt wear	Check	500 hr	12 mo	Recommended that the belt be removed and checked for wear at the 500 hour or 12 month service interval
Engine oil and oil filter	Change	500 hr	12 mo	First service — Change oil and filter between 100–500 hours during initial operation of new or rebuilt engine with Break-In Plus; if not using John Deere Plus 50 II, decrease interval to every 250 hours
coolant pump weep hole	Check	500 hr	12 mo
cooling system	Check	1500 hr	12 mo
fuel filter elements	Replace	500 hr	12 mo
open crankcase vent (OCV) system	Check	500 hr	12 mo
Cooling system	Test	2000 hr	24 mo	Pressure test cooling system
Engine speeds	Check	2000 hr	24 mo
Crankshaft vibration damper	Check	3000 hr	36 mo
DEF dosing unit filter	Change	3000 hr	36 mo
Engine electrical ground connection	Check	3000 hr	36 mo
Engine mounts	Check	3000 hr	36 mo
Engine valve clearance	Adjust	3000 hr	36 mo
Glow plugs	Test	3000 hr	36 mo	Test glow plugs for continuity
Cooling system	Change	4500 hr	60 mo	Flush and refill cooling system
Crankshaft vibration damper	Change	4500 hr	36 mo
Thermostats	Test	4500 hr	60 mo
Axles and jacks	Lubricate		12 mo	Grease axles and jacks (annually)
Wheel bearings	Inspect		12 mo	Or every 12,000 miles (19,312 km); more frequent under dusty or damp conditions
jacks	Lubricate		12 mo	Jack maintenance procedures should be performed annually (side-wind and top-wind models)
trailer wheel bearings	Lubricate		12 mo	Minimum recommended lubrication every 12 months or 12,000 miles (19,312 km); more frequent in dusty or damp conditions

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

Service specifications

Type	Item	Value	Unit	Condition
Other	Air filter restriction (replace point)	20	in. H2O	When yellow center bar reaches red section on filter minder gauge
Other	Air filter restriction indicator - replace air filter	20	in. H2O	yellow center bar reaches red section
Other	Altitude for full prime/standby power	10,000	ft (3,048 m)	5% power loss per 1,000 ft above maximum altitude
Other	DEF urea concentration	31.8-33.2	% urea
Other	DEF urea concentration	31.8–33.2	% urea
Pressure	Air filter replacement threshold (filter minder)	20	in. H2O	yellow center bar reaches red section
Pressure	Engine oil pressure - normal operating	35-80	psi (241-552 kPa)	engine running
Pressure	Low oil pressure shutdown - verify pressure reached within five seconds of restart	5	psi (34.5 kPa)	within five seconds
Pressure	Maximum tire pressure	125	psi (862 kPa)
Pressure	Minimum oil pressure at start	5	psi (34.5 kPa)	Within five seconds of start
Pressure	Oil pressure	5	psi (34.5 kPa)	within five seconds of restart
Pressure	Oil pressure gauge range	0-100	psi (0-689 kPa)
Speed	Engine governed operating speed	1800	RPM	constant
Speed	Engine idle speed	1,000 to 1,200	rpm	idle
Speed	Engine idle speed	1,000-1,200	rpm
Speed	Engine operating speed	1,800	rpm
Speed	Operating speed (governed)	1800	rpm
Speed	Output frequency	60	Hz	No load connected
Speed	Output frequency - normal operating	60	Hz	no loads connected
Temperature	Additional cold weather starting aids required below	-13	°F (-25 °C)
Temperature	Cold weather starting aids required below	32	°F (0 °C)
Temperature	Coolant temperature gauge range	150-250	°F (66-121 °C)
Temperature	Coolant temperature shutdown threshold	210	°F (99 °C)
Temperature	DEF freezing point	12	°F (-11 °C)
Temperature	Engine coolant temperature - normal operating	180-200	°F (82-93 °C)	average ambient air temperature of 70 °F (21 °C)
Temperature	Engine coolant temperature - stop engine	210	°F (99 °C)	or higher
Temperature	High coolant temperature - stop engine immediately	210	°F (99 °C)	or higher
Temperature	Maximum air temperature for full prime power	42	°C	standby power
Temperature	Maximum air temperature for full prime power (standby)	49	°C	MDG150/MDG175 standby; MDG250 prime
Temperature	Maximum allowable coolant temperature	235	°F (113 °C)
Torque	Generator drive plate bolts	40	ft-lbs (54 Nm)
Torque	Generator drive plate bolts	44	ft-lb (56.9 Nm)
Torque	Wheel lug nuts - first pass	20-25	ft-lb (27-33 Nm)	First pass tightening
Torque	Wheel lug nuts - first pass	20–25	ft-lb (27–33 Nm)
Torque	Wheel lug nuts - second pass	50-60	ft-lb (67-81 Nm)	Second pass tightening
Torque	Wheel lug nuts - second pass	50–60	ft-lb (67–81 Nm)
Torque	Wheel lug nuts - third pass	90-120	ft-lb (122-162 Nm)	Third pass tightening
Torque	Wheel lug nuts - third pass	90–120	ft-lb (122–162 Nm)
Voltage	Battery voltage - normal reading (12 volt systems)	12-14	V	engine running
Voltage	Fine voltage adjustment range	±10	%

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

Recommended fluids

Fluid	Grade	Standard	Ambient	Capacity	Notes
Coolant	50/50, 40/60, 40/60, 40/60 water/antifreeze mix		above -67°C	63.2 L	Freezing point table: 50% water/50% antifreeze = -12 °F (-24 °C); 40%/60% = -34 °F (-36 °C); 40%/60% = -54 °F (-48 °C); 40%/60% (maximum freeze protection at 60%) = -90 °F (-67 °C). Do not use chromate base rust inhibitor with propylene glycol base antifreeze, boosters, or additives.
Coolant	50% water / 50% antifreeze (down to -12 °F / -24 °C); 40% water / 60% antifreeze (to -34 °F / -36 °C and -48 °F / -48 °C, -90 °F / -67 °C); maximum freeze protection 60%		above -24°C	63.2 L	Coolant including engine 16.7 gal (63.2 L). Do not use chromate base rust inhibitor with propylene glycol base antifreeze, boosters, or additives.
Def	Aqueous Urea Solution 32 (AUS 32)	ISO 22241-1	-11°C to 30°C	130.4 L	DEF freezes below 12 °F (-11 °C); quality degrades rapidly above 140 °F (60 °C). Ideal storage 23–86 °F (-5–30 °C). Urea concentration must remain between 31.8–33.2%. John Deere DEF recommended; API or AdBlue certified DEF acceptable. DEF Tank Volume 34.4 gal (130.4 L); usable 28 gal (106 L).
Def	Aqueous Urea Solution 32 (AUS 32); 31.8–33.2% urea	ISO 22241-1; API Diesel Exhaust Fluid Certification Program or AdBlue Diesel Exhaust Fluid Certification	-11°C to 30°C	130.4 L	DEF tank total 34.4 gal (130.4 L), usable 28 gal (106 L). Unit does not ship from factory with DEF in tank. DEF freezes below 12 °F (-11 °C); degrades rapidly above 140 °F (60 °C); ideal storage 23–86 °F (-5–30 °C). John Deere DEF recommended.
Def	Aqueous Urea Solution 32 (AUS 32) - John Deere DEF recommended	ISO 22241-1	-5°C to 30°C	34.4 gal	DEF tank total 34.4 gal (130.4 L); usable 28 gal (106 L). Urea concentration must remain 31.8-33.2%. Degrades above 140 °F (60 °C); freezes below 12 °F (-11 °C). Ideal storage 23-86 °F (-5-30 °C). Use API or AdBlue certified DEF if John Deere DEF unavailable.
Engine oil	John Deere Plus-50 II or John Deere Plus-50 (extended 500 hr interval); John Deere Torq-Gard Supreme, API CJ-4, API CI-4 PLUS, API CI-4, API CH-4, ACEA E9, ACEA E7, ACEA E6, ACEA E5, ACEA E4			32.5 L	Oil capacity including filter 8.6 gal (32.5 L); 500 hour extended oil and filter change interval only with John Deere Plus-50 II/Plus-50 oil and approved John Deere oil filter. Factory filled with break-in oil.
Engine oil	John Deere Plus-50 II, John Deere Plus-50, John Deere Torq-Gard Supreme	API CJ-4, API CI-4 PLUS, API CI-4, API CH-4, ACEA E9, ACEA E7, ACEA E6, ACEA E5, ACEA E4		8.6 gal	Oil including filter = 8.6 gal (32.5 L). 500 hour extended oil/filter change interval only with John Deere Plus-50 II or Plus-50 oil and an approved John Deere oil filter. Use high quality detergent oil with viscosity appropriate for ambient temperature.
Engine oil	John Deere Plus-50, John Deere Plus-50 II, John Deere Torq-Gard Supreme, API CJ-4, API CI-4 PLUS, API CI-4, API CH-4, ACEA E9, ACEA E7, ACEA E6, ACEA E5, ACEA E4			32.5 L	Oil (including filter) capacity 8.6 gal (32.5 L). 500 hour extended drain interval only with extended drain oil pan, diesel sulfur content less than 2000 mg/kg, John Deere Plus-50 II or Plus-50 oil and approved John Deere oil filter. Factory filled with break-in oil.
Fuel	Ultra Low Sulfur Diesel			358.0 gal	Standard fuel tank total 358 gal (1,355 L); usable 343 gal (1,297 L). Optional fuel tank total 529 gal (2,002 L); usable 513 gal (1,914 L).
Grease	High quality grease made specifically for lubrication of wheel bearings; automotive grease for jack internal gearing				Lubricate wheel bearings every 12 months or 12,000 miles (19,312 km); jack maintenance annually

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

Procedures

Changing DVR2400 Voltage Regulator Settings adjustment

⚠ Modifications of parameter values are immediately effective.

Repeatedly press SELECT button until the desired parameter displays.
Press ENTER; EDIT mode activates and current value displays.
Press UP and DOWN buttons to modify the value.
Press ENTER to save; value flashes three times to confirm.

Fine Voltage Adjustment adjustment

With the unit running, press the Voltage Adjust button.
Press ENTER. The voltages displayed will flash.
Use UP and DOWN arrows to adjust the voltage.
Press ENTER to confirm; the voltages stop flashing.

Checking Generator Drive Plate Torque maintenance

Tools: Torque wrench

Disconnect battery.
Remove generator fan guard.
Tighten each of the drive plate bolts to 44 ft-lb (56.9 Nm).
Install generator fan guard.
Connect battery.

Cleaning DEF Tank maintenance

Tools: Suitable container, Distilled water

Drain DEF tank into a suitable container.
Flush DEF tank with distilled water.
Fill with new or good DEF.

DEF Tank Cleaning maintenance

Drain DEF tank into a suitable container.
Flush DEF tank with distilled water, and fill with new or good DEF.

Jack Maintenance maintenance

⚠ Perform annually.

Tools: Grease gun, Needle-nose applicator

Side-wind: apply automotive grease to internal gearing via jack cover, needle-nose applicator, or grease gun; rotate handle to distribute.
Side-wind: apply lightweight oil to handle at both sides of the tube.
Side-wind: lubricate caster wheel axle bolt and nut if equipped.
Top-wind: apply lightweight oil to the screw stem.

Jack Maintenance (Side-Wind Models) maintenance

Tools: Grease gun, Needle nose applicator

Apply a small amount of automotive grease to the internal gearing.
Rotate the jack handle to distribute the grease evenly.
Apply lightweight oil to the handle unit at both sides of the tube.
If equipped, lubricate the caster wheel axle bolt and nut assembly with the same lightweight oil.

Refilling DEF Tank maintenance

⚠ Risk of poisoning. Do not ingest diesel exhaust fluid.

⚠ Immediately clean any surfaces with water that come in contact with diesel exhaust fluid.

⚠ If DEF is filled into engine fuel tank, do not operate engine until system is purged.

Tools: Lint free cloth, Polyethylene, polypropylene, or stainless steel containers

Verify DEF tank cap area is free of debris before removing cap.
Wipe clean with a lint free cloth.
Seal DEF containers between use to prevent contamination and evaporation.
Avoid splashing DEF and contact with skin, eyes, or mouth.
Check DEF level daily and refill tank as needed; fill port has blue cap with DEF symbol.

Resetting Maintenance Alarms maintenance

With unit shut down, move control power switch to CONTROL ON (I).
Press ▲, ►, ▼, or ◄ to enter the maintenance screens.
Press and O simultaneously to display the Configuration menu.
Press to move the cursor down to the maintenance group.
Press ► to access sections; press to highlight the maintenance section.
Press ► to access parameters and highlight the maintenance alarm to reset.
Press to select editable parameters; press to highlight RESET.
Press to reset the selected maintenance alarm.
Repeat steps 6–8 for additional alarms.
Press and hold for five seconds to save changes; press and hold O for five seconds to discard.

Resetting the Maintenance Alarms maintenance

With unit shut down, move control power switch to CONTROL ON (I).
Press a navigation button to enter the maintenance screens.
Press enter and O simultaneously to display the Configuration menu.
Move cursor down to the maintenance group.
Press right arrow to access sections; highlight the maintenance section.
Press right arrow to access parameters; highlight the alarm to reset.
Press enter to select editable parameters; highlight RESET and press enter.
Press and hold enter for five seconds to save changes.

Testing DEF maintenance

⚠ Do not create DEF by mixing agricultural grade urea with water.

Tools: JDG11594 Digital DEF Refractometer, JDG11684 DEF Refractometer

Draw a DEF sample into a clear container; DEF must be crystal clear.
If cloudy or tinted, drain tank, flush with distilled water, and fill with new DEF.
If visual and smell tests pass, check concentration with a handheld refractometer.
If concentration is not within specification, drain, flush with distilled water, and refill.

Trailer Wheel Bearings maintenance

⚠ More frequent lubrication may be required under extremely dusty or damp conditions.

Tools: Standard grease gun, Clean cloth, High quality wheel bearing grease

Remove the small rubber plug on the grease cap.
Attach a standard grease gun fitting to the grease fitting.
Pump grease into the fitting until new grease is visible around the nozzle.
Wipe excess grease from the hub with a clean cloth and replace the rubber plug.

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

Voltage reconnection

Voltage	Phase	Connection	Leads	Notes
	3	Cam lock panel / terminal lugs	L1 Black, L2 Red, L3 Blue, N White, G Green	NEUTRAL (L0) BONDED TO FRAME from factory; bonding plate must be removed when used as standby power source
120/208	3	120/208V 3-phase (Low Wye)	L1, L2, L3, N	L1-L2 = 208V, L2-L3 = 208V, L3-L1 = 208V; L1-N = 120V, L2-N = 120V, L3-N = 120V
120/208V	3	Low wye (120/208V 3-phase)	T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12	L1-L2 = 208V; L1-N = 120V; L2-L3 = 208V; L2-N = 120V; L3-L1 = 208V; L3-N = 120V
120/208V	3	Low wye / Zig zag	T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, N	L1-L2 = 208V, L2-L3 = 208V, L3-L1 = 208V; L1-N = 120V, L2-N = 120V, L3-N = 120V.
120/240	1	120/240V 1-phase (Zig Zag)	L1, L3, N	L1-L3 = 240V; L1-N = 120V; L2-N = -------; L3-N = 120V
120/240	3	120/240V 3-phase (optional 4th position on voltage selector switch)	L1, L2, L3, N	L1-L2 = 240V, L2-L3 = 240V, L3-L1 = 240V; L1-N = 120V, L2-N = 208V, L3-N = 120V
120/240V	1	Single phase	T1, T2, T4, T5, T6, T8, T10, T11, T12, N	L1-L2 = 240V; L1-N = 120V.
120/240V	1	Zig zag (120/240V 1-phase)	T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12	L1-L3 = 240V; L1-N = 120V; L2-N = -------; L3-N = 120V
120/240V	3	Delta (120/240V 3-phase, 4-position switch only)	T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12	L1-L2 = 240V; L1-N = 120V; L2-L3 = 240V; L2-N = 208V; L3-L1 = 240V; L3-N = 120V
120/240V	3	Delta (4-position switch)	T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, N	L1-L2 = 240V, L1-N = 120V; L2-L3 = 240V, L2-N = 208V; L3-L1 = 240V, L3-N = 120V.
208	3	Voltage selector switch position label		Neutral (L0) bonded to frame when shipped from factory; bonding plate must be removed when used as standby power source
277/480	3	277/480V 3-phase (Hi Wye)	L1, L2, L3, N	L1-L2 = 480V, L2-L3 = 480V, L3-L1 = 480V; L1-N = 277V, L2-N = 277V, L3-N = 277V
277/480V	3	Hi wye (277/480V 3-phase)	T1,T2,T3,T4,T5,T6,T7,T8,T9,T10,T11,T12	L1-L2 = 480V; L1-N = 277V; L2-L3 = 480V; L2-N = 277V; L3-L1 = 480V; L3-N = 277V
277/480V	3	Hi wye / Delta (4-position)	T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, N	L1-L2 = 480V, L2-L3 = 480V, L3-L1 = 480V; L1-N = 277V, L2-N = 277V, L3-N = 277V. Neutral bonded to frame.
480	3	Voltage selector switch position label		Terminal lead colors: L1 Black, L2 Red, L3 Blue, N (Neutral) White, G (Ground) Green

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

Parts cataloged across the John Deere 6068 family

300

Part #	Description	Category
100-001	Air Filter	Air filter
24-21000	Air Filter	Air filter
60205	MOUNT, CONTROL BOX - COMMON	Air filter
85400737	OUTER AIR FILTER	Air filter
85400786	INNER AIR FILTER	Air filter
85403921	AIR FILTER HEAVY DUTY	Air filter
C03327	Air Cleaner	Air filter
C03396	AIR FILTER	Air filter
G030077	Air Cleaner Element (Engine) Primary	Air filter
G030078	Air Cleaner Element (Engine) Secondary	Air filter
GM100703	Element, Primary	Air filter
GM100704	Element, Safety	Air filter
GM90735	Air Cleaner	Air filter
GM91358	Element, Air Cleaner	Air filter
GM92823	Element, Air Cleaner Safety	Air filter
GM94203	Heavy Duty Air Cleaner	Air filter
MQ-125-AIR-FILTER	Air Filter	Air filter
DZ114956	ALTERNATOR	Alternator
DZ117503	ALTERNATOR	Alternator
DZ123153	ALTERNATOR	Alternator
LSA462M3	Alternator	Alternator
RE505895	ALTERNATOR (12V, 75A)	Alternator
RE506196	Alternator 12 Volt 55 Amp	Alternator
RE533516	ALTERNATOR	Alternator
RE533653	ALTERNATOR	Alternator
RE533654	ALTERNATOR	Alternator
RE537146	ALTERNATOR (28V, 50A) (3142)	Alternator
RE537507	ALTERNATOR (12V, 90 A) (31AE)	Alternator
RE537508	ALTERNATOR	Alternator
RE550906	ALTERNATOR	Alternator
RE555751	ALTERNATOR	Alternator
RE558675	ALTERNATOR	Alternator
RE558676	ALTERNATOR	Alternator
RE558678	ALTERNATOR	Alternator
RM100224	ALTERNATOR (REMAN FOR RE505895) (12V, 75A) (3135)	Alternator
SE501341	(REMAN FOR AT161324, DZ114957) (3142)	Alternator
SE502560	(3164)	Alternator
SE502628	ALTERNATOR (REMAN FOR RE533654) (12V, 120A) (3141)	Alternator
85402451	VOLTAGE REGULATOR	Avr
8972824026	Battery Acid charge Pb-Ca maintenance free, 24V - 1100 CCA	Battery
MQ-125-BATTERY	Battery	Battery
85425460	BELT	Belt
DZ114929	FAN BELT (LGTH = 1655 mm)	Belt
DZ115455	FAN BELT (LGTH = 1550 mm)	Belt
DZ115812	FAN BELT (LGTH = 1680 mm)	Belt
DZ117267	FAN BELT (LGTH = 1690 mm)	Belt
DZ117268	FAN BELT (LGTH = 1530 mm)	Belt
DZ118556	FAN BELT	Belt
DZ118557	FAN BELT	Belt
DZ118558	FAN BELT	Belt
DZ118559	FAN BELT	Belt
DZ118560	FAN BELT	Belt
DZ118561	FAN BELT; LGTH = 1750 mm (24JX)	Belt
DZ118764	FAN BELT (LGTH = 1525 mm)	Belt
DZ118781	FAN BELT (LGTH = 1700 mm)	Belt
DZ118786	FAN BELT	Belt
DZ118815	FAN BELT (LGTH = 1725 mm)	Belt
DZ119018	FAN BELT	Belt
DZ119059	FAN BELT	Belt
DZ119060	FAN BELT (LGTH = 1555 mm)	Belt
DZ119061	FAN BELT (LGTH = 1540 mm)	Belt
DZ119062	FAN BELT	Belt
DZ119063	FAN BELT	Belt
DZ119416	FAN BELT	Belt
DZ119477	FAN BELT (LGTH = 1565 mm)	Belt
DZ119478	FAN BELT (LGTH = 1570 mm)	Belt
DZ119515	FAN BELT	Belt
DZ119516	FAN BELT	Belt
DZ119520	FAN BELT	Belt
DZ119521	FAN BELT	Belt
DZ119522	FAN BELT	Belt
DZ119530	FAN BELT (LGTH = 1675 mm)	Belt
DZ119531	FAN BELT	Belt
DZ119533	FAN BELT	Belt
DZ119715	FAN BELT	Belt
DZ121128	FAN BELT; LGTH = 1725 mm (24JW)	Belt
DZ121129	FAN BELT	Belt
DZ121133	FAN BELT	Belt
GM70424-1	Fan Belt (12V)	Belt
GM70424-2	Fan Belt (24V)	Belt
GM70798-1	Fan Belt	Belt
GM70798-2	Fan Belt	Belt
GM70798-3	Fan Belt	Belt
GM70798-4	Fan Belt	Belt
GM84749	Fan Belt	Belt
L114292	FAN BELT	Belt
MQ-125-BELT	V-Belt	Belt
R123308	Drive Belt, L1066H Late Production and M1066H all	Belt
R123437	Drive Belt, LP-MP668T-H (with turbo)	Belt
R123439	Drive Belt, LP-MP445D (non-turbo)	Belt
R123457	Drive Belt LP-MP668T-H (with turbo, formerly #R123464)	Belt
R123464	Drive Belt, LP668D (non-turbo, replaces R123463)	Belt
R134625	FAN BELT (LGTH = 1645 mm)	Belt
R500277	FAN BELT	Belt
RE518097	Belt Tensioner	Belt
T282795	FAN BELT	Belt
T428692	FAN BELT (LGTH = 1665 mm)	Belt
T428724	FAN BELT (LGTH = 1575 mm)	Belt
T428725	FAN BELT	Belt
T428818	FAN BELT	Belt
T428820	FAN BELT (LGTH = 1580 mm)	Belt
T428822	FAN BELT	Belt
T428823	FAN BELT	Belt
T428825	FAN BELT	Belt
T428863	FAN BELT	Belt
VP64S17	Pump Belt	Belt
011064	Cold Weather Operation	Cold weather operation
RM100100	CONTROLLER	Controller
RM100131	CONTROLLER	Controller
SE502800	CONTROLLER	Controller
SE502801	CONTROLLER (REMAN FOR RE520953) (8498) (8420) (8414)	Controller
362140-S	Main controller circuit board	Controller board
950-1682	Coolant filter	Coolant filter
MOOOOO-20001Q	Auto START/STOP Engine Controller (ECU)	ECM / ECU
RE522680	Short Block Assembly (L-M1066H and NL1066H4)	Engine
5990101	Power switching device (contactor)	Exerciser switch
950-1683	Pilot Hydraulic Filter	Filter
950-2002	Secondary Fuel Filter	Filter
MQ-125-FUEL-FILTER	Fuel Filter	Filter
MQ-125-OIL-FILTER	Oil Filter	Filter
85403756	BATTERY ELECTROLYTE	Fluid
G122208	Clarke Eng Fluid - 5 gal	Fluid
G122209	Clarke Eng Fluid -1 gal	Fluid
MQ-125-COOLANT	Coolant	Fluid
MQ-125-OIL	Engine Oil	Fluid
TY22041	John Deere ENGINE BREAK-IN OIL (SAE 10W-30)	Fluid
24-51003	Fuel Filter without Drain Valve	Fuel filter
24-51005	Fuel Filter with Metal Drain Valve	Fuel filter
85400976	FUEL FILTER	Fuel filter
85403525	FUEL FILTER SEPARATOR	Fuel filter
85431120	FUEL FILTER	Fuel filter
950-2001	Fuel Filter	Fuel filter
CO2775	Element, Fuel Water Separator	Fuel filter
CO2776	Element, Fuel Filter Primary	Fuel filter
DZ112918	SECONDARY FUEL FILTER	Fuel filter
DZ115392	Secondary Fuel Filter	Fuel filter
DZ122688	SECONDARY FILTER ELEMENT (35E6)	Fuel filter
DZ128543	PRIMARY FUEL FILTER	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
RE5090362	Fuel filter	Fuel filter
RE509208	Filter Element (also order R113565)	Fuel filter
RE520906	PRIMARY FUEL FILTER	Fuel filter
RE522878	Fuel filter	Fuel filter
RE541578	CRANKSHAFT PULLEY AND DAMPER; OD = 190 mm (1343)	Fuel filter
RE541922	PRIMARY FUEL FILTER	Fuel filter
RE60021	FINAL FUEL FILTER	Fuel filter
RE62419	FUEL FILTER	Fuel filter
SE501934	(16CB)	Fuel injection nozzle
11-11013	Gasket, Thermostat Cover Mounting	Gasket
11-11023	Gasket, Manifold to Expansion Tank	Gasket
11-11043	Gasket	Gasket
11-21011	Gasket	Gasket
11-31031	Gasket, Turbo Oil Return	Gasket
11-31615	Gasket	Gasket
11-31635	Gasket, Turbo Exhaust (K27)	Gasket
33702	GASKET KIT	Gasket
36476	GASKET KIT	Gasket
85401131	ROCKER COVER GASKET	Gasket
DZ123559	COMPLETE BLOCK ASSEMBLY INCLUDES CYLINDER HEAD WITH VALVES AND ROCKER ARM ASSEMBLY, COMPLETE GASKET KIT WITH FRONT AND REAR SEALS	Gasket
R116516	Engine Cylinder Head Gasket	Gasket
R123226	Gasket, Water By-pass Tube	Gasket
R123345	Gasket, Thermostat Housing	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
R123543	Gasket, Rocker Arm Cover	Gasket
R123570	Gasket	Gasket
R123572	Gasket	Gasket
R135896	Gasket	Gasket
R500374	Gasket	Gasket
R504882	Gasket, Rocker Arm Cover Mounting	Gasket
R53108	Gasket, Starting Motor	Gasket
R90658	Gasket, Exhaust Manifold	Gasket
10000037182	Clamp, hose - spring type CTB-27ST	Hose
18-19501	Hose 1-1/4" ID x 3-1/2" 3 Ply Silicone	Hose
18-21016	Hose, 2" I.D. x 1-3/4" 3 Ply Silicone	Hose
18-31605	Hose, 1-1/4 x 32" Wire Reinforced	Hose
50332	Hose, fuel .750 ID 35 PSI SAE 30R7	Hose
60316	Clamp, hose - SAE 032 (1.56-2.50)	Hose
85401289	RADIATOR TOP HOSE	Hose
85426005	RADIATOR BOTTOM HOSE	Hose
GM62396	Hose, Reducer	Hose
GM91647	Hose, Hump	Hose
R128455	Hose, Radiator Inlet	Hose
R128456	Hose, Radiator Outlet	Hose
25-11011	Impeller with Gasket	Impeller
25-15704	Impeller	Impeller
35104	NOZZLE CLAMP ASSEMBLY	Injector
85400893	INJECTOR	Injector
RE48786	Fuel Injector (with turbocharger, includes keys 2-3)	Injector
RE519730	Fuel Injector	Injector
RE60062	Fuel Injector (without turbocharger, includes keys 2-3)	Injector
Y5020	DEF Dosing Injector	Injector
Y5021	Fuel Injector Harness	Injector
223673	Filter, oil	Oil filter
24-01002	Oil Filter	Oil filter
352793	Oil Filter	Oil filter
36881696	ELEMENT, ENGINE OIL FILTER	Oil filter
950-1681	Engine Oil Filter	Oil filter
C04521	Element, Oil Filter	Oil filter
DZ118286	OIL FILTER	Oil filter
GM32809	FILTER, OIL	Oil filter
GM64496	Oil Filter	Oil filter
GM77161	Oil Filter	Oil filter
GM86400	Oil Filter	Oil filter
LF3703	Lube, Spin-On	Oil filter
P-175-002	Oil Filter	Oil filter
RE504836	OIL FILTER	Oil filter
RE539279	ENGINE OIL FILTER	Oil filter
SE501813	(REMAN FOR DZ100021) (5024)	Oil pump
011068	Status: Generator at Rest, Stop Mode, 22:31	Service part / kit
011136	DANGER Electrocution. Do not disable or modify the connection box door safety switch.	Service part / kit
05-79650	Soundshield	Service part / kit
100REOZJ4	Stationary non-emergency gen-sets	Service part / kit
12547	Assembly, cam lock, qrtr turn	Service part / kit
12632	Lug Door Safety Swtiches(2)	Service part / kit
14203	Block, terminal - 10 pos.	Service part / kit
14204	Kit, ground bar	Service part / kit
17776	THROTTLE SHAFT BUSHING REPLACEMENT	Service part / kit
18556	Regulator, voltage - SE 350	Service part / kit
18893	Handle, lug door	Service part / kit
18934	Guard, potentiometer	Service part / kit
20-29601-1	Element, Intake Aftercooler	Service part / kit
21-10000	Zinc Plug	Service part / kit
21-10010	Zinc Anode	Service part / kit
22018	Hinge, continuous - 10.25	Service part / kit
22208	Hinge, control panel - 28”	Service part / kit
23025	Light, interior control panel	Service part / kit
23093	Governor linkage gap kit	Service part / kit
24-20015	Crankcase Breather Filter, Left hand	Service part / kit
24540	Holder, manual	Service part / kit
25-19511	Wear Plate	Service part / kit
25077	Switch, toggle - 20A VAC	Service part / kit
26229	Kit, voltage adjustment pot w/wires	Service part / kit
26431	ESO MOUNTING AND GROUNDING KIT	Service part / kit
26888	PROTECTIVE SHIPPING CAP	Service part / kit
26891	PROTECTIVE SHIPPING CAP	Service part / kit
27828	Panel, lug box glastic	Service part / kit
28561W	Box, lug enclosure	Service part / kit
28564W	Panel, control left	Service part / kit
28567	Bus, main breaker out	Service part / kit
28569W	Panel, lug box outlet	Service part / kit
28570W	Door, lug box	Service part / kit
28583W	Angle, top lug box	Service part / kit
28584	Bus, lug extension	Service part / kit
28653B	Weldment, control box	Service part / kit
28910	SPRING, pressure adjusting	Service part / kit
29893	Bracket, control board wire guide	Service part / kit
2x594	Ampere rating	Service part / kit
30175	Decal, UN31A tank caution	Service part / kit
30246W	Panel, digital control	Service part / kit
32966	O.S. METERING VALVE AND ARM ASSEMBLY	Service part / kit
33002	SEAT, spring	Service part / kit
34195	VALVE BODY	Service part / kit
34270	COIL ASSEMBLY	Service part / kit
34488	HOUSING AND ADVANCE PISTON KIT	Service part / kit
36493	HEAD AND ROTOR KIT	Service part / kit
37055	CSA SOLENOID KIT 12V NON-DELAY	Service part / kit
38411	CONNECTOR, back-leakage	Service part / kit
51551	Decal set, safety	Service part / kit
51552	Decal, high temp	Service part / kit
54-51006	Drain Valve, Metal	Service part / kit
54005	CAP, DEF FILL	Service part / kit
55104	CAP, FUEL FILL 3.50 - GREEN	Service part / kit
60020	Nut, M8-1.25 sflg lock	Service part / kit
60062	Screw, 10-32 x .750 pan phil, G2	Service part / kit
60068	Screw, 10-24X.500 pan phil	Service part / kit
60145	Nut, .375-16 ser flg lock	Service part / kit
60161	Nut, .250-20 hx ser flg	Service part / kit
60168	Screw, .312-18X.750 hx hd	Service part / kit
60175	Screw, .250-20X.500 sflg hex	Service part / kit
60252	Washer, #10 split lock	Service part / kit
60268	Rivet, .188 dia. x .126 to .250 grip, SS	Service part / kit
60270	Nut, 8-32 nylock, G6	Service part / kit
60398	Screw, 10-32 x .500 pan phil, SS	Service part / kit
60452	Washer, .313 flat 1.125/1.0 bonded rubber, SS	Service part / kit
60473	Rivet, 3/16	Service part / kit
60478	Screw, .375-16X2.000 hx hd	Service part / kit
60505	Nut, .312-18 U-clip - long type	Service part / kit
60507	Screw, .312-18x1.0 std hex, SS	Service part / kit
60525	Screw, 8-32X1.500 pan phil	Service part / kit
6068HF120-183	Engine	Service part / kit
60749	Plug, hole .500 dia. white	Service part / kit
61045	Nut, 10-32 sflg	Service part / kit
65309	Connector, 21 pin, deutsch	Service part / kit
65444	Transformer, current	Service part / kit
655K	Ground Contact Area	Service part / kit
65890	Lug, terminal dual #6-350mcm	Service part / kit
66191	Controller, eng/gen - prog.	Service part / kit
66455	Relay, 12V/70A NC/80A NO w/diode	Service part / kit
80REOZJ4	Stationary non-emergency gen-sets	Service part / kit
85401081	COOLANT HEATER RESISTANCE 1000W 240V	Service part / kit
85403616	ELECTRONIC ACTUATOR	Service part / kit
85403731	STARTING BATTERY 12V 100Ah 450A	Service part / kit
85404267	AIR HEATER RESISTANCE 1200W 12V	Service part / kit

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

AT326151 FridayParts $279.99 AT381935 FridayParts $229.99 KuduParts $289.00 P584001 KuduParts $43.00 FridayParts $44.85 BF46158 KuduParts $43.00 FridayParts $44.85 RE566739 FridayParts $288.60 RE538097 eBay $26.99 FridayParts $22.89 DZ111671 FridayParts $22.89 RE505515 eBay $23.68 FridayParts $22.89 4.0KW FridayParts $172.20 SinoCMP $339.00 RE522334 eBay $299.00 FridayParts $315.20 01912354 FridayParts $315.20 RE549624 FridayParts $841.29 RE516553 eBay FridayParts $15.50 RE520906 Amazon eBay $39.99 NAPA $154.09 KuduParts $38.00 FridayParts $39.85 AT372657 KuduParts $21.00 FridayParts $23.99 RE51091 FridayParts $59.99 5025E FridayParts $59.99 RE541449 KuduParts $115.00 FridayParts $120.65 RE65836 FridayParts $15.52 RE65165 FridayParts $49.89 H216169 Amazon eBay FridayParts $30.43 RE551507 Amazon eBay $35.00 KuduParts $24.00 FridayParts $26.20 DZ115391 Amazon eBay $25.99 NAPA $65.51 KuduParts $24.00 FridayParts $26.20 DZ128543 Amazon eBay $44.95 NAPA $65.51 KuduParts $24.00 FridayParts $26.20 RE549230 Amazon eBay $295.00 FridayParts $315.99 RE549511 FridayParts $287.99 RE549752 FridayParts $34.88 DZ122256 FridayParts $24.84 RE538870 FridayParts $24.84 DZ123024 FridayParts $29.58 RE65168 KuduParts $24.00 FridayParts $25.88 RE543935 FridayParts $16.45 RE517435 FridayParts $16.45 DZ112918 Amazon eBay $117.99 NAPA $166.71 FridayParts $62.20 RE557329 FridayParts $839.99 RE564861 FridayParts $1186.19 DZ123516 FridayParts $1186.19 RE539279 Amazon eBay $15.00 NAPA $41.24 KuduParts $27.00 FridayParts $28.99 RE65912 FridayParts $32.99 RE555988 KuduParts $397.00 FridayParts $417.06 R119874 Amazon eBay $17.95 FridayParts $149.99 DZ118674 FridayParts $887.75 DZ110471 FridayParts $887.75 R123354 Amazon eBay FridayParts $34.99 DZ128838 FridayParts $555.99 DZ108461 FridayParts $800.31 R114082 eBay $27.35 FridayParts $38.99 RE560683 FridayParts $54.99 RE544426 FridayParts $1456.31 RE556406 Amazon eBay $120.00 FridayParts $84.88 AT13740 Amazon eBay FridayParts $12.10 AM292T FridayParts $12.10 525mm FridayParts $772.15 DZ111104 FridayParts $772.15 700mm FridayParts $699.99 DZ128842 FridayParts $699.99 DZ128844 FridayParts $785.99 DZ118677 FridayParts $785.99 RE537507 Amazon eBay $181.95 FridayParts $212.78 SE502560 Amazon eBay $198.44 FridayParts $212.78

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

Also used in

John Deere 200C LC — Excavator
John Deere 2054 — Logger
John Deere 230C LC — Excavator
John Deere 230CLC — Excavator
John Deere 230LC — Excavator
John Deere 2554 — Logger
John Deere 270C LC — Excavator
John Deere 270CLC — Excavator
John Deere 460DC — Skidder
John Deere 540G — Skidder
John Deere 540G III — Skidder
John Deere 9410 — Combine

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.

Common questions

What is the oil capacity of the John Deere 6068HFG06?

The John Deere 6068HFG06 engine has an oil capacity of 34.0 liters.

What is the displacement of the John Deere 6068HFG06?

The John Deere 6068HFG06 has a displacement of 6.8 liters with 4 cylinders.

Which generators use the John Deere 6068HFG06 engine?

The John Deere 6068HFG06 powers 2 generator set(s), including Generac MDG250, Hipower HRJW-240 T4F.

What is a common problem with the John Deere 6068HFG06 engine?

A commonly reported issue on generators using the John Deere 6068HFG06 is: Low fuel level shutdown. Cause: Low fuel level. Fix: Check fuel level on controller..