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John Deere 6068HF285 6.8L Industrial Diesel Engine

Model Photo


  • 6.8L PowerTech™ E
  • 104 - 149 kW (139 - 200 hp)



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

Emissions Certifications

Less Regulated  
Tier 3  
Stage IIIA equivalent  

General engine data

Model 6068HF285
Number of cylinders 6
Displacement-- L (cu in) 6.8 (415)
Bore and Stroke-- mm (in) 106 x 127 (4.17 x 5.00)
Compression Ratio 19.0:1
Engine Type In-line, 4-Cycle
Aspiration 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 28-32%
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 30-32%
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 30-32%