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

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

Length 43 in
Height 35 in
Minimum Width 31 in
Configuration In-line 6, 4-stroke-cycle diesel
Maximum Width 34 in
Emissions U.S. EPA Tier 3, IMO II, RCD II, China II
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Dimensions & Weights
Length 43 in
Height 35 in
Minimum Width 31 in
Maximum Width 34 in
Dry Weight 1,676 lb
Minimum Engine Dry Weight 1,609 lb
Maximum Engine Dry Weight 1,676 lb
Width 31 in
Engine Specifications
Configuration In-line 6, 4-stroke-cycle diesel
Emissions U.S. EPA Tier 3, IMO II, RCD II, China II
Rated Engine Speed 2300 - 2700 rpm
Bore 4 in
Stroke 5 in
Displacement 428 in³
Aspiration Turbocharged-aftercooled
Governor Electronic (A5E2 V2 ECM)
Refill Capacity 20 L (5.3 gal)
Oil Change Interval 500 hrs
Cooling Heat exchange or keel cooled
Flywheel Housing SAE No. 03
Rotation Counterclockwise from the flywheel end
Speed Range 2300 - 2700 rpm
Power Rating
Power Range 280 bhp - 425 bhp (209 bkW - 317 bkW)

Key Features & Benefits

  • Common rail fuel system enables optimum combustion and low emissions
  • Reduced combustion noise through advanced electronic control
  • 12V or 24V electrical system
  • Compatible with Cat® displays and electronics
  • Closed crankcase ventilation system improves engine room cleanliness
  • Gear-driven jacket water pump and sea water pump for superior reliability
  • Maintenance free valve train with hydraulic valve lash adjusters
  • Self-priming fuel system ensures a smooth start every time
  • Standard Equipment
    • Water-cooled turbocharger and exhaust manifold
    • Common rail fuel system
    • Corrosion-resistant sea water aftercooler
    • Closed crankcase ventilation system
    • Starter motors - 12V or 24V
    • Fuel cooler
    • Integral engine oil cooler
    • Vibration damper and guard
    • Electric fuel priming pump
    • Self-tensioning multi-vee alternator drive belt
    • Gear-driven seawater pump (rubber impeller)
    • Fin and tube-type jacket water heat exchanger
    • Front and rear engine mounting brackets
  • Optional Attachments
    • Marine Classification Society (MCS) Approval ABS, BV, CCS, CRS, *DNV-GL, IRS, LR, Class NK, PRS, RINA (*DNV-GL approval available for keel-cooled engines only)
    • SOLAS double wall high-pressure fuel lines
    • Engine mounted bilge pumps and auxiliary water pumps with electromagnetic clutch
    • Engine-mounted secondary alternator - 24V 55 amp or 12V 100 amp
    • Analogue gauge displays
    • Transmission gear oil cooler (engine mounted)
    • Glow plugs
    • Jacket water heater
    • Various 5" and 6" water cooled exhaust elbow configurations
    • Cabin heater (calorifier) connections
    • Right-hand and high-level left-hand oil dipsticks
    • Mechanical throttle converter for repower
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