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John Deere 6068 Engine Specifications

Engine Overview
Engine ConfigurationInline, 6-cylinder, 4-stroke Diesel
Displacement6.8 L
Compresion Ratio17.0 : 1
Air InductionTurbocharged or Non-Turbo
Internal Components
Bore Diameter4.17 in.
Piston Stroke5.00 in.
Cylinder LinersReplaceable Wet-Type Liners
Noise & Vibration ControlInternal Balance Shafts for Reduced Noise and Vibration
Cooling & Lubrication
Keel CoolingOptional
Cooling SystemLiquid Cooled
Exhaust ManifoldWater-Cooled on Marine Engines
Lubrication SystemMounted Oil Filter with Combined Fill Cap and Dipstick
Fuel & Performance
Fuel SystemMechanical and Electronic Fuel Injection Pump Options
Operating Engine Speed1,800-2,600 RPM
Low Idle Speed825-875 RPM
Peak Torque453-811 Lb-Ft
Peak PowerUp To 400 HP
Operating Characteristics
Fuel Consumption15-76 L/Hr
Typical Engine Load40% to 60% Continuous
Typical Annual Operation Hours1,000-5,000 hours depending on application
Typical Full-Load OperationUp to 16 hours continuously- smaller models
approximately 1 hour every 12-hour operating period-larger models
Installation Information
Dimensions (L x W x H)Up to 45.7 x 24.5 x 44.4 In.
Dry Weight1,254-1,495 Lb
Maximum Installation Angle12°-15° Front Up; 0° Front Down
Marine Features
Corrosion ProtectionMarine-Grade Components Designed for Seawater Resistance
Emissions ComplianceAvalible in Non-Tier through Tier IV Configurations

John Deere 6068 EPA Emission Tier Ratings

Non-Tier
Engine Version Engine ModelRated Horsepower Operating RPM
6.8L PowerTech6068TF220170 HP2,500 RPM
6.8L PowerTech6068TF220185 HP2,600 RPM
6.8L PowerTech6068TFM01220 HP2,600 RPM
6.8L PowerTech6068TF220231 HP2,100 RPM
Tier I
Engine Version Engine ModelRated Horsepower Operating RPM
6.8L PowerTech6068DF150125 HP2,500 RPM
6.8L PowerTech6068TF150126 HP2,200 RPM
6.8L PowerTech6068TF150148 HP2,300 RPM
6.8L PowerTech6068TF150150 HP1,800 RPM
6.8L PowerTech6068TF150155 HP2,500 RPM
6.8L PowerTech6068TF150157 HP2,200 RPM
6.8L PowerTech6068TF250161 HP1,500 RPM
6.8L PowerTech6068TF150165 HP1,800 RPM
6.8L PowerTech6068TF250166 HP1,800 RPM
6.8L PowerTech6068TF250168 HP2,200 RPM
6.8L PowerTech6068TF150170 HP2,500 RPM
6.8L PowerTech6068TF250172 HP2,300 RPM
6.8L PowerTech6068TFM50 M2175 HP2,400 RPM
6.8L PowerTech6068HF250185 HP2,400 RPM
6.8L PowerTech6068TF250185 HP2,400 RPM
6.8L PowerTech6068TF250190 HP1,800 RPM
6.8L PowerTech6068HF150192 HP2,200 RPM
6.8L PowerTech6068HF250198 HP1,800 RPM
6.8L PowerTech6068TF250200 HP2,400 RPM
6.8L PowerTech6068TFM50 M3200 HP2,500 RPM
6.8L PowerTech6068HF150205 HP1,500 RPM
6.8L PowerTech6068HF120208 HP1,500 RPM
6.8L PowerTech6068HF150210 HP2,400 RPM
6.8L PowerTech6068HF150223 HP1,800 RPM
6.8L PowerTech6068HF250225 HP2,400 RPM
6.8L PowerTech6068TFM50 M4225 HP2,600 RPM
6.8L PowerTech6068HF120245 HP1,500 RPM
6.8L PowerTech6068HF150251 HP1,800 RPM
6.8L PowerTech6068HF120264 HP2,100 RPM
6.8L PowerTech6068SFM50 M4267 HP2,500 RPM
6.8L PowerTech6068HF150282 HP1,800 RPM
6.8L PowerTech6068HF258282 HP1,800 RPM
6.8L PowerTech6068SFM50 M5300 HP2,600 RPM
Tier II
Engine Version Engine ModelRated Horsepower Operating RPM
6.8L PowerTech6068TF275135 HP2,200 RPM
6.8L PowerTech6068TFM76148 HP1,800 RPM
6.8L PowerTech6068TF275165 HP1,800 RPM
6.8L PowerTech6068TF275170 HP2,500 RPM
6.8L PowerTech6068HF275173 HP2,000 RPM
6.8L PowerTech6068HF275200 HP1,800 RPM
6.8L PowerTech6068TFM75 M3201 HP2,600 RPM
6.8L PowerTech6068HF275228 HP1,800 RPM
6.8L PowerTech6068HF275251 HP2,400 RPM
6.8L PowerTech6068HF475251 HP2,200 RPM
6.8L PowerTech6068HF475256 HP1,800 RPM
6.8L PowerTech6068HF475275 HP2,400 RPM
6.8L PowerTech6068HF475282 HP1,800 RPM
6.8L PowerTech6068AFM75 M3300 HP2,500 RPM
6.8L PowerTech6068AFM75 M4330 HP2,600 RPM
Tier III
Engine VersionEngine ModelRated HorsepowerOperating RPM
6.8L PowerTech6068HF285139 HP2,400 RPM
6.8L PowerTech6068HF285177 HP2,000 RPM
6.8L PowerTech6068HF285200 HP2,400 RPM
6.8L PowerTech6068HF285216 HP1,800 RPM
6.8L PowerTech6068HF485228 HP1,800 RPM
6.8L PowerTech6068HF285237 HP1,800 RPM
6.8L PowerTech6068HF485250 HP1,800 RPM
6.8L PowerTech6068AFM85 M2265 HP2,400 RPM
6.8L PowerTech6068HF485266 HP2,400 RPM
6.8L PowerTech6068AFM85 M3300 HP2,500 RPM
6.8L PowerTech6068SFM85 M3321 HP2,600 RPM
6.8L PowerTech6068AFM85 M4330 HP2,600 RPM
6.8L PowerTech6068SFM85 M4355 HP2,700 RPM
6.8L PowerTech6068SFM85 M5400 HP2,800 RPM
Tier IV
Engine Version Engine ModelRated Horsepower Operating RPM
6.8L PowerTech6068HI550140 HP2,400 RPM
6.8L PowerTech6068HI550156 HP2,400 RPM
6.8L PowerTech6068HI550173 HP2,400 RPM
6.8L PowerTech6068HI550185 HP2,400 RPM
6.8L PowerTech6068HI550200 HP2,400 RPM
6.8L PowerTech6068HI550225 HP2,400 RPM
6.8L PowerTech6068HI550251 HP2,400 RPM
6.8L PowerTech6068CI550225 HP2,400 RPM
6.8L PowerTech6068CI550251 HP2,400 RPM
6.8L PowerTech6068CI550275 HP2,400 RPM
6.8L PowerTech6068CI550300 HP2,400 RPM
6.8L PowerTech6068HFC93139 HP2,400 RPM
6.8L PowerTech6068HFC93172 HP2,400 RPM
6.8L PowerTech6068HFC94225 HP2,400 RPM
6.8L PowerTech6068HFC94255 HP2,400 RPM
6.8L PowerTech6068HFC08225 HP2,400 RPM
6.8L PowerTech6068HFC08250 HP2,400 RPM
6.8L PowerTech6068HFC08255 HP2,400 RPM

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