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

  • Overview

Reliability & Durability

Superior response time and acceleration; 12V or 24V electrical system; Gear driven jacket water pump and sea water pump for superior reliability; Maintenance free valve train with hydraulic valve lash adjusters

Easy to use

Compatible with Cat® displays and electronics; Self priming fuel system ensures a smooth start every time

Environment friendly

No visible smoke; Common rail fuel system enables optimum combustion and low emissions; Reduced combustion noise through advanced electronic control; Closed crankcase ventilation system improves engine room cleanliness

Dimensions & Weights
Length 1095 mm (43.1 in)
Power Rating
Minimum Rating 208 bkW (280 BHP)
Dimensions & Weights
Height 891 mm (35.1 in)
Power Rating
Maximum Rating 317 bkW (425 BHP)
Dimensions & Weights
Minimum Width 798 mm (31.4 in)
Engine Specifications
Configuration In-line 6, 4-stroke-cycle diesel
Dimensions & Weights
Maximum Width 850 mm (33.5 in)
Engine Specifications
Emissions U.S. EPA Tier 3 / IMO IInemissions certified (commercial),nRCD 2016 compliant, EU Stage IIIAncompliant, CCNR Stage II throughnreciprocity with EU Stage IIIA
Dimensions & Weights
Minimum Engine Dry Weight 730 (1609 lb)
Engine Specifications
Rated Engine Speed 2300 - 2700 rpm
Dimensions & Weights
Maximum Engine Dry Weight 760 (1676 lb)
Engine Specifications
Bore 105 mm (4.13 in)
Stroke 135 mm (5.31 in)
Displacement 7.01 l (428 inu00b3)
Aspiration Turbocharged-aftercoolednaspiration
Governor Electronic (A5E2 V2 ECM)
Refill Capacity Lube Oil System w/Oil filter change:n20 L (5.3 gal)
Oil Change Interval 500 hrs
Cooling Heat exchanger or keel cooled
Flywheel Housing SAE No. 03 with SAEn11.5 in flywheel
Rotation Counterclockwise from flywheel end

Standard Equipment

  • COOLING SYSTEM
    • Gear driven jacket water pump
    • Corrosion resistant sea water aftercooler
    • Fuel cooler
  • EXHAUST SYSTEM
    • Watercooled turbocharger and exhaust manifold
  • FUEL SYSTEM
    • Common rail fuel system
    • Electric fuel priming pump
  • GENERAL
    • Vibration damper and guard
    • Self-tensioning multi-vee belt drive
  • LUBE SYSTEM
    • Closed crankcase ventilation system
    • Integral engine oil cooler
  • MOUNTING SYSTEM
    • Front and rear engine mounting brackets
  • STARTING SYSTEM
    • Starter motors – 12V or 24V

Optional Equipment

  • AIR INLET SYSTEM
    • Various 6″ water cooled exhaust elbow configurations
  • COOLING SYSTEM
    • Engine mounted bilge pumps and auxiliary water pumps with electromagnetic clutch
    • Tube and bundle jacket water heat exchanger and gear-driven sea water pump (rubber impeller)
    • Jacket water heater
    • Cabin heater (calorifier) connections
  • FUEL SYSTEM
    • SOLAS double wall high pressure fuel lines kit
  • LUBE SYSTEM
    • Left-hand and right-hand oil dipsticks
    • Transmission gear oil cooler (engine mounted)
  • PROTECTION SYSTEM
    • Additional engine and transmission sensor packages for on or off vessel monitoring
  • STARTING SYSTEM
    • Engine mounted secondary alternator – 24V 100 amp or 12V 175 amp
    • Glow plugs

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