6.8L Industrial Diesel Engine
  • 6.8L PowerTech E
  • 104 - 149 kW (139 - 200 hp)
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Get details on 139 to 200 hp, 104 to 149 kW John Deere 6068HF285 industrial diesel engines for OEM equipment, including features, specs, and integrated support.
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2-valve cylinder head
  • Cross flow head design that provides excellent breathing from a lower cost two-valve cylinder head
High-pressure common-rail (HPCR) and engine control unit (ECU)

The HPCR fuel system provides variable common-rail pressure, multiple injections, and higher injection pressures, up to 1600 bar (23,000 psi). It also controls fuel injection timing and provides precise control for the start, duration, and end of the injection

Fixed geometry turbocharger
  • Fixed geometry turbochargers are sized for a specific power range and optimized to provide excellent performance across the entire torque curve. They are also designed to maximize fuel economy between the engine's rated speed and peak torque.
Air-to-air aftercooled
  • This is the most efficient method of cooling intake air to help reduce engine emissions while maintaining low-speed torque, transient response time, and peak torque. It enables an engine to meet emissions regulations with better fuel economy and the lowest installed costs
Multiple injection strategy
  • The new HPCR fuel system and engine control unit (ECU) allow for multiple fuel injections. The number of fuel injections, based on speed and load, help contribute to lower combustion temperatures, which reduce the formation of NOx and particulates. The multiple injection strategy also provides an added benefit of noise reduction
Engine performance
  • New power bulge feature
  • Increased low-speed torque
  • New higher-peak torque ratings
  • Faster torque rise
  • Lower-rated speeds available for reduced noise and improved fuel economy
Compact size
  • Mounting points are the same as Tier 2/Stage II engine models
John Deere electronic engine controls
  • PowerTech E engines offer electronically controlled fuel systems with improved cold-start performance, precise engine speed control, torque curve shaping and more. Because these systems have less need for redundant sensors, add on electronic governors, and shutdown devices they result in a lower total installed cost.
Additional features
  • Self-adjusting poly-vee fan drive
  • Forged-steel connecting rods
  • Replaceable wet-type cylinder liners
  • Either-side service
  • 500-hour oil change
  • Gear-driven auxiliary drive
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Emissions Certifications
EPA Tier 3
EU Stage III A
General Engine Data
Number of cylinders
Displacement-- L (cu in)
6.8 (415)
Bore and Stroke-- mm (in)
106 x 127 (4.17 x 5.00)
Compression Ratio
Engine Type
In-line, 4-Cycle
Turbocharged and air-to-air aftercooled
Length - mm (in)
1123 (44.2)
Width-- mm (in)
657 (25.9)
Height-- mm (in)
1036 (40.8)
Weight, dry - kg (lb)
608 (1340)
Performance Data Range
Intermittent - Rated power/Rated speed
129-149 kW (173-200 hp) @2200-2400 rpm
Intermittent - Peak power
132-149 kW (177-200 hp) @2000-2400 rpm
Intermittent - Power bulge
0-3 % @2000 rpm
Intermittent - Peak torque
714-785 N·m (527-579 ft-lb) @1500 rpm
Intermittent - Torque rise
Heavy Duty - Rated power/Rated speed
116-129 kW (156-173 hp) @2200-2400 rpm
Heavy Duty - Peak power
124-129 kW (166-173 hp) @2000-2400 rpm
Heavy Duty - Power bulge
0-7 % @2000 rpm
Heavy Duty - Peak torque
667 N·m (492 ft-lb) @1500 rpm
Heavy Duty - Torque rise
Continuous - Rated power/Rated speed
104-116 kW (139-156 hp) @2200-2400 rpm
Continuous - Peak power
111-116 kW (149-156 hp) @2000-2400 rpm
Continuous - Power bulge
0-7 % @2000 rpm
Continuous - Peak torque
598 N·m (441 ft-lb) @1500 rpm
Continuous - Torque rise
We want to make owning and operating your equipment simple and affordable. 
We have a range of finance options to suit any customer.  Contact your local Emmetts branch, or visit these sites for more information and a free quote.
John Deere FinancialEmmetts Finance
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