C7.1 High Performance Propulsion Engine

C7.1 High Performance Propulsion Engine

C7.1 High Performance Propulsion Engine

The C7.1 marine propulsion engineis ideal for recreational boating applications, specifically smaller vessels and motoryachts ranging from 25 -60 feet in size. The engine features a common rail fuel system enabling optimum combustion and low emissions. The engines provide noticeably quiet operation due to reduced combustion noise through advanced electronic control. Additionally, no visible smoke is emitted from the C7.1 engines during operation.

Product Specs

Dimensions & Weights

Width - Engine
Length - Engine
Engine Dry Weight - Approximate

Engine Specifications

Rotation from Flywheel End
Speed Range
2900 rpm
In-line 6, 4-Stroke-Cycle Diesel
EPA Tier 3 Recreational, IMO II, RCD 2016
Turbocharged, aftercooled


Power Range
298 bkW - 373 bkW (400 bhp - 500 bhp)


  • Air Inlet System
    • Air cleaner/fumes disposal (closed system)
    • Turbochargers, jacket water cooled
    • Aftercooler condensate drain
  • Control System
    • Cold mode start strategy
    • PWM secondary throttle
    • Cold mode start strategy
    • Electronic diagnostics and fault logging
    • Engine and transmission monitoring (temperature, pressure)
    • Electronic fuel/air ratio control
    • Engine Protection Mode for extended ambient conditions
    • Three types of throttle inputs (CAN, PWM, and 0-5V)
    • 70-pin customer connector
  • Cooling System
    • Sea water pump, gear driven, for HEX cooled engines only
    • Sea water aftercooled
    • Jacket water pump, gear driven
    • JW Heat Exchanger - Corrosion resistant shell and tube style
    • Fuel cooler
    • Expansion tank
    • Thermostat housing
    • 63mm hose bead raw water inlet
    • 50 mm hose bead raw water oulet
    • Integrated gear oil cooler
  • Exhaust System
    • Water-cooled exhaust manifold & turbocharger
    • 90mm ID round flanged exhaust outlet
  • Flywheels & Flywheel Housings
    • Flywheel Housing, SAE No. 3 - With M10 Threads
    • Flywheel, SAE 11 1/2, with 3/8 UNF threads
    • SAE standard rotation
  • Fuel System
    • High Pressure Common Rail fuel system
    • High pressure fuel system pump with integral low pressure fuel transfer pump
    • Primary fuel filter, remote mounted
    • Secondary fuel filter, LH top service location
  • Lube System
    • Crankcase breather, closed crankcase ventilation
    • Oil filter, LH top service location
    • Oil cooler
    • Oil pan, center sump
    • Oil pump, gear driven
    • Dipstick, RH service on Port, LH service on Starboard
  • Mounting System
    • Front and rear support brackets
  • General
    • Front belt and damper guard
    • Lifting eyes
    • Upper front-facing customer wiring connector and Service Tool connection
  • Protection System
    • Electronic Engine Monitoring System provides engine de-rate strategies to protect against adverse operating conditions
  • Paints
    • Engines are painted Matterhorn white with pleasure craft finish includes epoxy primer with polyurethane topcoat. Fuel lines, water lines and clamps and wiring harness will be unpainted. Standard decals and informational films will be installed. Shipped lo

Optional Equipment

  • Control System
    • Instrument Panels
  • Instrumentation
    • Transmission Sensors
  • Mounting System
    • Vibration isolation mounting

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