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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

  • 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 Equipment

  • 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