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Commercial propulsion engines

Cat C7.1

Stock on demand

Price on request

Power Range

31.4

Speed Range

31.4

Emissions

31.4

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US
Metric

Feature and benefits

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

Key features & benefits

Common rail fuel system enables optimum combustion and low emissions Reduced combustion noise through advanced electronic co…

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

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Technical specification

US
Metric

Power Rating

Specification	Value
Power Range	31.4

Engine Specifications

Specification	Value
Speed Range	31.4
Emissions	31.4
Configuration	31.4
Displacement	798 mm
Aspiration	31.4
Governor	31.4
Flywheel Housing	31.4
Bore	798 mm
Stroke	798 mm
Refill Capacity	31.4
Oil Change Interval	31.4
Rotation	31.4
Cooling	31.4

Dimensions & Weights

Specification	Value
Dry Weight	798 mm
Height	798 mm
Length	798 mm
Width	798 mm

General

Marine Classification Society (MCS) Approval
Water-cooled turbocharger and exhaust manifold
Closed crankcase ventilation system
Integral engine oil cooler
Self-tensioning multi-vee alternator drive belt

Fuel system

Common rail fuel system
Starter motors - 12V or 24V
Fuel cooler
Electric fuel priming pump

Starting system

Corrosion-resistant sea water aftercooler

Mounting system

Vibration damper and guard
Front and rear engine mounting brackets

Cooling system

Gear-driven seawater pump (rubber impeller)
Fin and tube-type jacket water heat exchanger

Fuel system

SOLAS double wall high-pressure fuel lines

General

Engine-mounted secondary alternator - 24V 55 amp or 12V 100 amp
Analogue gauge displays
Glow plugs
Mechanical throttle converter for repower

Cooling system

Transmission gear oil cooler (engine mounted)
Jacket water heater
Cabin heater (calorifier) connections

Exhaust system

Various 5" and 6" water cooled exhaust elbow configurations

Lube system

Right-hand and high-level left-hand oil dipsticks

Download technical specifications

Learn more information about the Cat C7.1 Marine Propulsion Engine (U.S. EPA Tier 3 / IMO II).

Download (2.22 MB, PDF)

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