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Caterpillar

C7.1 High Performance Propulsion Engine

The C7.1 marine propulsion engine is 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.

Media

Photos

C7.1 High Performance Propulsion Engine
C7.1 High Performance Propulsion Engine

Videos

Meet the new C7.1 Commercial Propulsion Engine
C7.1 Marine Propulsion Engine Walkaround

Documents

Features

Key Features & Benefits

Details

Specifications

Spec Value
Power Range 400 bhp - 500 bhp (298 bkW - 373 bkW) 400 bhp - 500 bhp (298 bkW - 373 bkW)
Spec Value
Speed Range 2900 rpm 2900 rpm
Rotation from Flywheel End Counterclockwise Counterclockwise
Bore 4.13 in 105 mm
Stroke 5.31 in 135 mm
Aspiration Turbocharged, aftercooled Turbocharged, aftercooled
Displacement 428 in³ 7.01 l
Configuration In-line 6, 4-Stroke-Cycle Diesel In-line 6, 4-Stroke-Cycle Diesel
Emissions IMO II, U.S. EPA Tier 3, RCD II, China II IMO II, U.S. EPA Tier 3, RCD II, China II
Spec Value
Width – Engine 31.4 in 798 mm
Height 34.5 in 876 mm
Engine Dry Weight – Approximate 1676 lb 760 kg
Length – Engine 43.1 in 1095 mm

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 sea water pump (rubber impeller)
  • Fin and tube type jacket water heat exchanger
  • Front and rear engine mounting brackets

Optional Equipment

OPTIONAL ATTACHEMENTS

  • Alternators – 24V 140 amp – 12V 175 amp
  • Transmission gear oil cooler (engine mounted)
  • Instrument Panels
  • Glow plugs
  • Jacket water heater
  • 6″ water cooled exhaust elbow
  • Isolation mounts
  • Primary fuel filter/water separator (remote mount)
  • Selection of factory-fitted marine transmissions and oil hoses
  • Cabin heater (calorifier) connections
  • Triple groove PTO pulley (crankshaft mounted)
  • Flexible fuel hoses
  • Right-hand and high level left hand oil dipsticks

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