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John Deere 6068TFM50 Engine

The John Deere 6068TFM50 is a 6.8 L 6-cylinder turbocharged engine rated at 1500 rpm, producing up to 119 kW. It powers generator sets from John Deere and PowerTech.

Also known as: John Deere Power Systems 6068TFM50

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

6.8 L

Displacement

Cylinders

1500 rpm

Rated speed

119 kW

Gross power

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

Engine specifications

Displacement	6.8 L
Cylinders	6
Aspiration	Turbocharged
Rated speed	1500 rpm
Gross power	119 kW

Generator sets powered by this engine

Shared across brands: John Deere, PowerTech

John Deere 6068TFM50PowerTech 6068TFM50

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

Repair guides

Step-by-step procedures compiled from the John Deere service manual for this engine.

Service intervals

Item	Action	Hours	Months	Notes
Engine oil and oil filter	Change	100 hr		First service — After the first 100 hours of operation of a new or rebuilt engine; use John Deere ENGINE BREAK-IN OIL during break-in
Engine coolant	Test		12 mo	Test the coolant solution at intervals of 12 months or less and whenever excessive coolant is lost
Supplemental coolant additive	Check		12 mo	Replenish additives between drain intervals by adding supplemental coolant additive every 12 months or as determined by coolant testing
Vibration damper	Replace	4500 hr	60 mo	Replace every five years or 4500 hours, whichever occurs first

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
Clearance	Assembled Rod Bearing—ID	77.876—77.927	mm (3.0659—3.0679 in.)
Clearance	Camshaft Follower Bore in Block—ID	31.70—31.75	mm (1.248—1.250 in.)
Clearance	Camshaft Follower-to-Bore—Clearance	0.06—0.13	mm (0.002—0.005 in.)
Clearance	Camshaft Follower—OD	31.61—31.64	mm (1.245—1.246 in.)
Clearance	Connecting Rod Bearing-to-Journal (New Parts)—Oil Clearance; wear limit 0.152 mm (0.0060 in.)	0.050—0.127	mm (0.0020—0.0050 in.)
Clearance	Connecting Rod Bore (Without Bearing Inserts)—ID	82.677—82.703	mm (3.2550—3.2560 in.)
Clearance	Connecting Rod Bore—Maximum Permissible Out-of-Round	0.038	mm (0.0015 in.)
Clearance	Crankshaft—End Play	0.029—0.357	mm (0.001—0.014 in.)
Clearance	Cylinder Block Main Bearing Bore—ID	84.455—84.481	mm (3.3250—3.3260 in.)
Clearance	Cylinder Head Flatness—Maximum Acceptable Out-of-Flat for Entire Length or Width	0.08	mm (0.003 in.)
Clearance	Cylinder Head Flatness—Maximum Acceptable Out-of-Flat for Every 150 mm (5.90 in.)	0.03	mm (0.001 in.)
Clearance	Cylinder Liner—Height above Block	0.030—0.100	mm (0.001—0.004 in.)
Clearance	Cylinder Liner—ID	106.48—106.52	mm (4.192—4.194 in.)
Clearance	Cylinder Liner—Maximum Taper	0.05	mm (0.002 in.)
Clearance	Exhaust Valve Guide-to-Valve Stem (New) Clearance (four-valve)	0.025—0.077	mm (0.0010—0.0030 in.)
Clearance	Exhaust Valve—Recess in Cylinder Head (four-valve); wear limit 1.81 mm (0.071 in.)	0.81—1.31	mm (0.032—0.052 in.)
Clearance	Exhaust Valve—Recess in Cylinder Head (two-valve); wear limit 2.26 mm (0.089 in.)	1.22—1.72	mm (0.048—0.068 in.)
Clearance	Fuel Supply Pump Push Rod Bore in Block—ID	10.00—10.05	mm (0.3937—0.3957 in.)
Clearance	Fuel Supply Pump Push Rod—OD	9.891—9.917	mm (0.3894—0.3904 in.)
Clearance	Intake Valve Guide-to-Valve Stem (New) Clearance (four-valve)	0.012—0.064	mm (0.0005—0.0025 in.)
Clearance	Intake Valves—Recess in Cylinder Head (four-valve); wear limit 1.77 mm (0.070 in.)	0.77—1.27	mm (0.030—0.050 in.)
Clearance	Intake Valves—Recess in Cylinder Head (two-valve); wear limit 1.63 mm (0.064 in.)	0.61—1.11	mm (0.024—0.044 in.)
Clearance	Intake and Exhaust Valve Guide-to-Valve Stem Wear Limit (four-valve)	0.15	mm (0.0059 in.)
Clearance	Intake and Exhaust Valves—Maximum Variation for a Pair of Valves (Per Cylinder)	0.3	mm (0.012 in.)
Clearance	Main Bearing Bore Centerline-to-Cylinder Block Top Deck—Distance	337.896—337.972	mm (13.3029—13.3059 in.)
Clearance	Maximum Permissible Height Difference at Nearest Point of Two Adjacent Liners, or Within a Single Liner	0.05	mm (0.002 in.)
Clearance	Piston Pin-to-Bushing—Oil Clearance; wear limit 0.102 mm (0.0040 in.)	0.020—0.056	mm (0.0008—0.0022 in.)
Clearance	Piston Rings 4045DF, TF150 and 6068DF, TF150 No. 1 Compression—End Gap	0.33—0.58	mm (0.013—0.023 in.)
Clearance	Piston Rings 4045TF250 and 6068TF250 No. 2 Compression—End Gap	0.75—1.00	mm (0.030—0.039 in.)
Clearance	Piston-to-Liner Clearance at Bottom of Piston Skirt (Naturally Aspirated Engines)	0.08—0.14	mm (0.003—0.005 in.)
Clearance	Piston-to-Liner Clearance at Bottom of Piston Skirt (Turbocharged Engines)	0.08—0.15	mm (0.003—0.006 in.)
Clearance	Rocker Arm Bore—ID (four-valve); wear limit 20.16 mm (0.794 in.)	20.065—20.115	mm (0.790—0.792 in.)
Clearance	Rocker Arm Bore—ID (two-valve); wear limit 20.17 mm (0.794 in.)	20.07—20.12	mm (0.790—0.792 in.)
Clearance	Rocker Arm Shaft—OD (four-valve); wear limit 19.91 mm (0.784 in.)	19.962—20.038	mm (0.786—0.789 in.)
Clearance	Rocker Arm Shaft—OD (two-valve); wear limit 19.94 mm (0.785 in.)	19.99—20.02	mm (0.787—0.788 in.)
Clearance	Valve Bridge—Pocket-to-Pocket Variation (Maximum)	0.1	mm (0.004 in.)
Clearance	Valve Guide-to-Valve Stem (New) Clearance (two-valve); wear limit 0.15 mm (0.006 in.)	0.05—0.10	mm (0.002—0.004 in.)
Gap	Valve Face—Maximum Runout (Intake and Exhaust)	0.038	mm (0.0015 in.)
Other	Crankshaft Journal—OD	77.800—77.826	mm (3.0629—3.0640 in.)
Other	Damper Pulley Inner Ring—Wobble (Maximum)	0.5	mm (0.020 in.)
Other	Damper Pulley Outer Ring—Wobble (Maximum)	1.50	mm (0.060 in.)
Other	Damper—Maximum Radial Runout (Concentricity)	1.50	mm (0.060 in.)	engine at operating temperature
Other	Exhaust Valve Head—OD (four-valve)	35.87—36.13	mm (1.412—1.422 in.)
Other	Exhaust Valve Head—OD (two-valve)	42.37—42.63	mm (1.668—1.678 in.)
Other	Exhaust Valve Stem—OD (four-valve)	6.984—7.000	mm (0.2749—0.2756 in.)
Other	Exhaust Valve Stem—OD (two-valve)	7.848—7.874	mm (0.3090—0.3100 in.)
Other	Exhaust Valves—Lift (four-valve head); wear limit 9.00 mm (0.354 in.)	9.32—9.72	mm (0.367—0.383 in.)	engine cold
Other	Exhaust Valves—Lift (two-valve head); wear limit 11.08 mm (0.436 in.)	11.51—11.94	mm (0.453—0.470 in.)	engine cold
Other	Flywheel Bearing Bore Concentricity—Maximum Variation	0.127	mm (0.005 in.)
Other	Flywheel Face Flatness—Maximum Variation	0.23	mm (0.009 in.)
Other	Intake Valve Head—OD (four-valve)	36.87—37.13	mm (1.452—1.462 in.)
Other	Intake Valve Head—OD (two-valve)	46.47—46.73	mm (1.830—1.840 in.)
Other	Intake Valve Stem—OD (four-valve)	6.987—7.013	mm (0.2750—0.2761 in.)
Other	Intake Valve Stem—OD (two-valve)	7.864—7.884	mm (0.3096—0.3104 in.)
Other	Intake Valves—Lift (four-valve head); wear limit 8.70 mm (0.343 in.)	9.03—9.43	mm (0.356—0.371 in.)	engine cold
Other	Intake Valves—Lift (two-valve head); wear limit 11.34 mm (0.447 in.)	11.77—12.21	mm (0.463—0.481 in.)	engine cold
Other	Maximum Valve Seat Runout (two-valve)	0.08	mm (0.003 in.)
Other	Minimum Acceptable Cylinder Head Thickness	104.24	mm (4.104 in.)
Other	New Cylinder Head—Thickness	104.87—105.13	mm (4.129—4.139 in.)
Other	Piston Cooling Orifice Jet—Diameter	1.4	mm (0.055 in.)

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	Notes
Coolant	John Deere COOL-GARD Prediluted Coolant (50% ethylene glycol or 55% propylene glycol)	ASTM D6210 prediluted/concentrate; ASTM D4985 requires initial SCA charge	System filled for freeze protection to -37°C (-34°F). Do not use coolant-water mixture greater than 60% glycol. Do not mix ethylene glycol and propylene glycol base coolants.
Engine oil	John Deere ENGINE BREAK-IN OIL	Alternate: API CE, CD, CC or ACEA E2, E1 (first 100 hours)	New/rebuilt engines filled at factory with break-in oil. Do not exceed 100 hours with break-in oil.
Engine oil	John Deere PLUS-50 (preferred)	ACEA E5, ACEA E4; also John Deere TORQ-GARD SUPREME, API CI-4, CH-4, CG-4, CF-4, ACEA E3, E2 (Non-Certified and Tier 1 Certified Engines)	Multi-viscosity diesel engine oils are preferred. If oils meeting API CG-4, API CF-4, or ACEA E2 are used, reduce service interval by 50%.
Fuel	Bio-diesel fuel	ASTM D6751, EN 14214 or equivalent; up to 5% blend (B5)	Raw pressed vegetable oils are NOT acceptable. Check engine oil level daily when air temperature is -10°C (14°F) or lower.
Fuel	Diesel fuel	EN 590 or ASTM D975; Cetane number 40 minimum (greater than 50 preferred) for Non-Certified, Tier I and Tier 2/Stage II engines	Sulfur content should not exceed 0.5%; DO NOT use diesel fuel with sulfur content greater than 1.0%. Fuel lubricity minimum 3100 gram load (BOCLE).
Grease	John Deere SD POLYUREA GREASE (preferred)	NLGI Performance Classification GC-LB; also John Deere HD LITHIUM COMPLEX GREASE, HD WATER RESISTANT GREASE, GREASE-GARD	Consult grease supplier before mixing different types of grease.

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

Procedures

Check and Adjust Valve Clearance (Four-Valve Head Engines) adjustment

⚠ Adjust with engine COLD

⚠ Replace valves, seats, springs and retainers in pairs; also replace bridge

Tools: JDE83 Flywheel Turning Tool, JDG1571 Timing Pin, Feeler gauge

Disconnect NEGATIVE battery terminal.
Remove rocker arm cover and crankcase ventilator tube.
Remove plugs from timing/rotation hole and timing pin hole.
Rotate flywheel until No. 1 cylinder is at TDC compression; insert timing pin.
Loosen jam nut on rocker arm adjusting screw.
Turn adjusting screw until feeler gauge slips with slight drag.
Tighten jam nut to 27 N•m (20 lb-ft) and recheck clearance.

Check and Adjust Valve Clearance (Two-Valve Head Engines) adjustment

⚠ Valve clearance MUST be checked and adjusted with engine COLD

⚠ Disconnect NEGATIVE battery terminal to prevent accidental starting

Tools: JDE83 or JDE81-11 Flywheel Turning Tool, JDG1571 or JDE81-4 Timing Pin, Feeler gauge

Disconnect NEGATIVE battery terminal.
Remove rocker arm cover and crankcase ventilator tube.
Remove plugs from engine timing/rotation hole and timing pin hole.
Rotate flywheel until No. 1 cylinder is at TDC compression; insert timing pin.
Loosen jam nut on rocker arm adjusting screw.
Turn adjusting screw until feeler gauge slips with a slight drag.
Tighten jam nut to 27 N•m (20 lb-ft) and recheck clearance.

Measure Valve Lift diagnostic

⚠ Measure at 0.00 mm clearance and with engine COLD

Tools: JDG1571 or JDE81-4 Timing Pin, Flywheel turning tool, Dial indicator

Remove rocker arm cover.
Set No. 1 piston at TDC compression and install timing pin.
Set rocker arm-to-valve tip clearance to 0.00 mm for the appropriate valves.
Place dial indicator on top of valve spring cap or rotator; set dial to 0.
Remove timing pin and rotate engine one full revolution (360°).
Record maximum dial reading as valve reaches full open.
Compare to specification; if out of spec, inspect entire valve train and camshaft.

Perform Engine Break-In operation

⚠ Do not run engine at full load for more than 10 minutes at one time

⚠ Do not use PLUS-50 or API CI-4/CH-4/CG-4/CF-4/CF-2 during break-in

Tools: Dynamometer

Fill crankcase with John Deere Engine Break-In Oil.
Start engine and run at loads/speeds per break-in chart for time limits.
Run engine 1—2 minutes at 1500 rpm no load before shutdown.
Check and readjust valve clearance as necessary; cylinder head retorque not required.
Avoid prolonged idling or sustained maximum load during first 20 hours.
After 100 hours maximum, drain break-in oil and change oil filter.
Fill crankcase with John Deere PLUS-50 or TORQ-GARD SUPREME.

Grind Valve Seats (Two-Valve Head Engines) repair

⚠ Valve seat grinding should only be done by experienced personnel

⚠ Do not grind excessively

Tools: JT05893 Heavy-Duty Seat Grinder Set, Eccentrimeter, Vernier caliper

Install appropriate pilot in valve guide bore.
Install grinding stone on arbor and position onto valve seat.
Grind valve seats to 30° seat angle.
Measure seat width; reduce width with a narrowing stone if too wide.
Check valve seat runout with an eccentrimeter if valve does not seat properly.
Blend or radius all sharp edges after grinding.

Install Crankshaft Rear Oil Seal and Wear Sleeve repair

⚠ Do not separate seal and wear sleeve

⚠ No lubrication on sealing portion or sleeve ID; coat rubber OD of seal with light engine oil only

Tools: JT30040B or KCD10002A Installer Set, JDG476 Rear Oil Seal/Wear Sleeve Installation Tool Set

Clean crankshaft flange OD and flywheel housing ID; remove nicks or burrs.
Install oil seal housing without seal using new gasket; snug cap screws.
Use JDG478 Driver to center seal housing on crankshaft.
Tighten seal housing-to-cylinder block cap screws to 27 Nm (20 lb-ft); remove driver.
Install JDG477 Pilot on end of crankshaft with socket head screws.
Start seal/wear sleeve on pilot with open end toward engine.
Position JDG478 Driver and tighten nut until driver bottoms on pilot.
Remove tool set from engine.

Install Cylinder Head (Two-Valve Head Engines) repair

⚠ Always use new cylinder head cap screws

⚠ Head gasket can be damaged if head is repositioned on block

Tools: Guide studs, Torque wrench, JT05993 Torque Angle Gauge

Dip fuel supply pump push rod in clean engine oil and install.
Reinstall two dowel pins in cylinder block.
Place new head gasket on block dry (no sealant).
Position cylinder head over guide studs and lower onto block.
Dip entire cap screw in JDT305 Lubricant.
Remove guide studs and install new flanged-head cap screws.
Tighten in sequence Step 1 (100 N•m), Step 2 (150 N•m), Step 3 verify (150 N•m).
Torque-turn each screw an additional 60° ± 10°.

Install Cylinder Liner in Block repair

⚠ Install liners into same cylinder bore as removed

⚠ Do not intermix piston/liner sets on the same engine

⚠ If a packing may have sheared, remove and examine liner and packing

Tools: KCD10001 or JDG1145 Cylinder Liner Puller

Install liner in block bore with mark toward front of engine.
Rotate liner 90° from removed position if OD is pitted or eroded.
Finish seating liner using cylinder liner puller.
Hold liners with large flat washers and cap screws, snug only.
Clean liner bores with waterless hand cleaner and wipe dry.
Apply clean engine oil to liner bores to prevent corrosion.

Install Fuel Injectors (Four-Valve Head Engines) repair

⚠ Replace 24-volt glow plugs with same voltage rating as removed

Tools: JDG1652 Injector Nozzle Removal Tool

Ensure used copper washer has been removed from bottom of injector sleeve.
Install copper washer on end of fuel injector tip.
Install injector with hold-down clamp; ensure fuel inlet port faces supply tube.
Install fuel supply tube with smaller end toward injector; seat tube.
Install fitting and screw using proper torque procedure.
Install glow plug and torque to 15 N•m (133 lb-in.).

Install Piston Rings repair

⚠ Piston rings can be damaged if expanded too far

Tools: JDE85, JDE135 or KJD10140 Piston Ring Expander

Use piston ring expander to install oil ring expander in bottom ring groove.
Install oil control ring over expander with end gap opposite expander gap.
Identify top side of compression rings by marks.
Install rectangular compression ring in center groove with top toward top of piston.
Position gap opposite the oil control ring gap.
Install keystone compression ring in top groove with top toward top of piston.
Position gap opposite the rectangular compression ring gap.
Stagger ring gaps as shown.

Install Piston and Connecting Rod Assembly repair

⚠ Do not intermix piston/liner sets on the same engine

⚠ NEVER use connecting rod cap screws more than once for final assembly

⚠ On PRECISION JOINT rods ensure cap is properly aligned

Tools: JDE84 Piston Ring Compressor, Torque wrench, JT05993 Torque Angle Gauge

Coat pistons, liners and ring compressor with clean engine oil.
Place ring compressor with piston and rod over liner with 'FRONT' toward front of engine.
Push piston down until top ring enters liner.
Install bearing insert in rod with tang in groove.
Apply clean engine oil to insert and crankshaft journal; pull rod against journal.
Install bearing insert in cap; apply oil and install cap with tangs to same side.
Dip NEW cap screws in clean oil and install.
Tighten cap screws alternately to 58 N•m (43 lb-ft), then torque-turn 90—100°.

Install Valves repair

⚠ Replace valves, seats, springs and retainers in pairs (four-valve)

⚠ Valve springs MUST be installed with small diameter end away from cylinder head (four-valve)

Tools: JDE138 Valve Spring Compressor, JDG678 Valve Stem Seal Installer (two-valve), JDG1651 Valve Seal Installer (four-valve)

Lubricate valve stems and guides with clean engine oil.
Insert valves in head (same location if reused).
Use valve stem seal installer to slide seals over stems onto guide tower.
Install valve springs and rotators.
Compress springs and install retainer locks.
Strike end of each valve three or four times with a soft mallet.
Recheck valve recess.

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

RE66153 Amazon eBay FridayParts $35.34 RE503664 FridayParts $244.00 R502014 FridayParts $244.00 RE70357 FridayParts $45.00 KuduParts $45.00 RE500160 FridayParts $38.99 KuduParts $39.50 RE70358 KuduParts $39.50 FridayParts $45.00 RE65969 FridayParts $554.20 RE507850 FridayParts $554.20 AR65507 Amazon eBay $12.00 FridayParts $27.20 R502983 FridayParts $107.60 R51936 Amazon eBay $29.99 FridayParts $17.68 R63603 FridayParts $17.68 AT106413 KuduParts $33.00 FridayParts $35.89 RE539558 FridayParts $19.55 AT162597 FridayParts $82.15 KuduParts $86.00 RE500608 Amazon eBay $70.24 FridayParts $73.99 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 RE516553 eBay FridayParts $15.50 R500277 Amazon eBay $45.00 NAPA $48.47 FridayParts $41.09 RE502014 FridayParts $168.56 R79605 FridayParts $16.99 RE43593 eBay $27.89 FridayParts $25.99 DB4629-5796 FridayParts $1648.56 RE509497 FridayParts $1648.56 DB4629-5592 FridayParts $1599.75 RE502620 FridayParts $1599.75 RE505921 FridayParts $1750.99 R48000 Amazon eBay FridayParts $9.68 R34767 FridayParts $9.68 RE517382 FridayParts $132.23 RE502079 FridayParts $53.46 RE29658 FridayParts $53.46 R524481 FridayParts $21.99 RE57489 FridayParts $2706.50 RE526834 Amazon eBay $19.99 FridayParts $29.63 RE533516 Amazon eBay $110.00 NAPA $301.10 FridayParts $100.49 SE501387 Amazon eBay $110.00 FridayParts $100.49 AT173624 eBay FridayParts $100.49 SE501835 Amazon eBay $136.50 NAPA $301.10 FridayParts $100.49 SE501823 Amazon eBay FridayParts $175.96 77HP FridayParts $175.96 1999-2004 FridayParts $11.99 RE522329 FridayParts $632.50 RE540413 Amazon eBay FridayParts $234.60 RE526690 FridayParts $234.60 RE525690 FridayParts $234.60 RE525689 SinoCMP $259.00 FridayParts $287.30 RE540412 Amazon eBay SinoCMP $259.00 FridayParts $287.30 R132267 FridayParts $178.95 RE55512 FridayParts $389.00 RE505102 FridayParts $1475.70

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 200LC — Excavator
John Deere 360DC — Skid Steer Loader
John Deere 360DG — Skid Steer Loader
John Deere 460DG — Skidder
John Deere 540G II — Skidder
John Deere 540G III — Skidder
John Deere 548G — Skidder
John Deere 548G II — Skid Steer Loader
John Deere 640D — Skid Steer Loader
John Deere 648D — Skidder
John Deere 790E LC — Excavator
John Deere 9400 — 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 displacement of the John Deere 6068TFM50?

The John Deere 6068TFM50 has a displacement of 6.8 liters with 6 cylinders.

Which generators use the John Deere 6068TFM50 engine?

The John Deere 6068TFM50 powers 2 generator set(s), including John Deere 6068TFM50, PowerTech 6068TFM50.