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Piscataway Campus 732-885-5555
Bensalem Campus 215-639-4300
Piscataway Campus 732-885-5555
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2026 RSVPPride Month 2023

Cat® C7.1 Commercial Propulsion
Exterior View

Cat® C7.1 Commercial Propulsion

ApplicationWorkboat
Speed Range2300 – 2700 rpm
EmissionsU.S. EPA Tier 3, IMO II, RCD II, China II
ConfigurationIn-line 6, 4-stroke-cycle diesel
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Learn more about our Cat® C7.1 Commercial Propulsion

The Cat® C7.1 commercial propulsion engine delivers responsive, efficient power for commercial vessels operating in demanding conditions. With ratings from 280 to 425 bhp (209 to 317 bkW) at 2300 to 2700 rpm, its compact inline-six configuration supports a range of applications, including tugs, crew boats, push boats and fishing vessels.

Application
Workboat
Speed Range
2300 - 2700 rpm
Emissions
U.S. EPA Tier 3, IMO II, RCD II, China II
Configuration
In-line 6, 4-stroke-cycle diesel
Displacement
428in³
Aspiration
Turbocharged-aftercooled
Governor
Electronic (A5E2 V2 ECM)
Flywheel Housing
SAE No. 03
Bore
4.13in
Stroke
5.31in
Refill Capacity
20 L (5.3 gal)
Oil Change Interval
500 hrs
Rotation
Counterclockwise from the flywheel end
Cooling
Heat exchange or keel cooled
Dry Weight
1676lb
Height
34.5in
Length
43.1in
Width
31.4in
Power Range
280 bhp - 425 bhp (209 bkW - 317 bkW)
Marine Classification Society (MCS) Approval
SOLAS double wall high-pressure fuel lines
Engine-mounted secondary alternator - 24V 55 amp or 12V 100 amp
Analogue gauge displays
Glow plugs
Mechanical throttle converter for repower
Transmission gear oil cooler (engine mounted)
Jacket water heater
Cabin heater (calorifier) connections
Various 5" and 6" water cooled exhaust elbow configurations
Right-hand and high-level left-hand oil dipsticks
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