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Home New Commercial Propulsion Engines C7.1 Marine Propulsion Engine (U.S. EPA Tier 3 / IMO II)

C7.1 Marine Propulsion Engine (U.S. EPA Tier 3 / IMO II)

C7.1 Marine Propulsion Engine (U.S. EPA Tier 3 / IMO II)

Power Rating

Power Range 280 bhp - 425 bhp (209 bkW - 317 bkW)

Engine Specifications

Speed Range 2300 - 2700 rpm
Emissions U.S. EPA Tier 3, IMO II, RCD II, China II
Configuration In-line 6, 4-stroke-cycle diesel
Displacement 428in³
Aspiration Turbocharged-aftercooled
Governor Electronic (A5E2 V2 ECM)
Flywheel Housing SAE No. 03
Bore 4.13in
Stroke 5.31in
Refill Capacity 20 L (5.3 gal)
Oil Change Interval 500 hrs
Rotation Counterclockwise from the flywheel end
Cooling Heat exchange or keel cooled

Dimensions & Weights

Dry Weight 1676lb
Height 34.5in
Length 43.1in
Width 31.4in

Standard Equipment

  • General
    • Marine Classification Society (MCS) Approval
    • Water-cooled turbocharger and exhaust manifold
    • Closed crankcase ventilation system
    • Integral engine oil cooler
    • Self-tensioning multi-vee alternator drive belt
  • Fuel System
    • Common rail fuel system
    • Starter motors - 12V or 24V
    • Fuel cooler
    • Electric fuel priming pump
  • Starting System
    • Corrosion-resistant sea water aftercooler
  • Mounting System
    • Vibration damper and guard
    • Front and rear engine mounting brackets
  • Cooling System
    • Gear-driven seawater pump (rubber impeller)
    • Fin and tube-type jacket water heat exchanger

Optional Equipment

  • Fuel System
    • SOLAS double wall high-pressure fuel lines
  • General
    • Engine-mounted secondary alternator - 24V 55 amp or 12V 100 amp
    • Analogue gauge displays
    • Glow plugs
    • Mechanical throttle converter for repower
  • Cooling System
    • Transmission gear oil cooler (engine mounted)
    • Jacket water heater
    • Cabin heater (calorifier) connections
  • Exhaust System
    • Various 5" and 6" water cooled exhaust elbow configurations
  • Lube System
    • Right-hand and high-level left-hand oil dipsticks