Cat C7.1

Commercial propulsion engines

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About the Cat C7.1

 

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.

Specifications

Ratings
Power Range 298 bkW - 373 bkW (400 bhp - 500 bhp)
Engine Specifications
Rotation from Flywheel End Counterclockwise
Speed Range 2900 rpm
Bore 4.13 in
Emissions EPA Tier 3 Recreational, IMO II, RCD 2016
Stroke 5.31 in
Aspiration Turbocharged, aftercooled
Displacement 427.16 in³
Configuration In-line 6, 4-Stroke-Cycle Diesel
Dimensions & Weights
Width - Engine 31.4 in
Height 34.5 in
Engine Dry Weight - Approximate 1653 lb
Length - Engine 54.9 in

Features

Features

Reliability & Durability

Reliability & Durability
Superior response time and acceleration for better maneuverability and safety; Grid heater for improved cold weather starting; Electrical advantages with 12V or 24V electrical system; Highest standard paint quality

Easy to use

Easy to use
Compatible with Cat® Displays to monitor all vessel operations; Available engine-mounted display panel with start, stop, and engine diagnostic; Single access point improves serviceability; Wiring harnesses with a woven cover provide more attractive serviceable compenents; gplink ready for remote monitoring

Environment friendly

Environment friendly
No visible smoke on start up or underway; The 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; Electronically controlled supercharger provides industry-leading torque and throttle response at low speeds, while maintaining fuel efficiency at high speeds

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