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Cat® C7.1 Commercial Propulsion
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Responsive Workboat Performance
Flexible Installation Options
Maintenance Designed Around Uptime
Learn more about the Cat® C7.1 Commercial Propulsion
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Dimensions & Weights
Dry Weight
1676 lbHeight
34.5 inLength
43.1 inWidth
31.4 in -
Engine Specifications
Application
WorkboatAspiration
Turbocharged-aftercooledBore
4.13 inConfiguration
In-line 6, 4-stroke-cycle dieselCooling
Heat exchange or keel cooledDisplacement
428 in³Emissions
U.S. EPA Tier 3, IMO II, RCD II, China IIFlywheel Housing
SAE No. 03Governor
Electronic (A5E2 V2 ECM)Oil Change Interval
500 hrsRefill Capacity
20 L (5.3 gal)Rotation
Counterclockwise from the flywheel endSpeed Range
2300 - 2700 rpmStroke
5.31 in -
Power Rating
Power Range
280 bhp - 425 bhp (209 bkW - 317 bkW)
General
- Marine Classification Society (MCS) Approval
Water-cooled turbocharger and exhaust manifold
Vibration damper and guard
Starter motors – 12V or 24V
Integral engine oil cooler
Closed crankcase ventilation system
Fuel cooler (optional)
Gear-driven seawater pump (rubber impeller)
Common rail fuel system
Self-tensioning multi-vee alternator drive belt
Electric fuel priming pump
Corrosion-resistant sea water aftercooler
Fin and tube-type jacket water heat exchanger
Front and rear engine mounting brackets
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