C7.1 Tier 3 / IMO II
C7.1 Marine Auxiliary Engine (U.S. EPA Tier 3 / IMO II)
For unique applications requiring a custom approach - Caterpillar marine auxiliary engines provide the power you work with and live by. So everything about them is built to help you do your job, whether that means bringing in a catch or cargo, or simply providing a pleasurable day on the water.
DESCRIPTION
C7.1 Marine Auxiliary Engine (U.S. EPA Tier 3 / IMO II)Meet the new C7.1 Commercial Propulsion Engine
C7.1 Marine Propulsion Engine Walkaround
Reliability & Durability
Superior response time and acceleration; 12V or 24V electrical system; Gear driven jacket water pump and sea water pump for superior reliability; Maintenance free valve train with hydraulic valve lash adjusters
Easy to use
Compatible with Cat® displays and electronics; Self priming fuel system ensures a smooth start every time
Environment friendly
No visible smoke; 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
- Standard Equipment
- Optional Equipment
- Specs
- Docs
Standard Equipment
- COOLING SYSTEM
- Gear driven jacket water pump
- Corrosion resistant sea water aftercooler
- Fuel cooler
- EXHAUST SYSTEM
- Watercooled turbocharger and exhaust manifold
- FUEL SYSTEM
- Common rail fuel system
- Electric fuel priming pump
- GENERAL
- Vibration damper and guard
- Self-tensioning multi-vee belt drive
- LUBE SYSTEM
- Closed crankcase ventilation system
- Integral engine oil cooler
- MOUNTING SYSTEM
- Front and rear engine mounting brackets
- STARTING SYSTEM
- Starter motors - 12V or 24V
Optional Equipment
- AIR INLET SYSTEM
- Various 6" water cooled exhaust elbow configurations
- COOLING SYSTEM
- Engine mounted bilge pumps and auxiliary water pumps with electromagnetic clutch
- Tube and bundle jacket water heat exchanger and gear-driven sea water pump (rubber impeller)
- Jacket water heater
- Cabin heater (calorifier) connections
- FUEL SYSTEM
- SOLAS double wall high pressure fuel lines kit
- LUBE SYSTEM
- Left-hand and right-hand oil dipsticks
- Transmission gear oil cooler (engine mounted)
- PROTECTION SYSTEM
- Additional engine and transmission sensor packages for on or off vessel monitoring
- STARTING SYSTEM
- Engine mounted secondary alternator - 24V 100 amp or 12V 175 amp
- Glow plugs
Specs
Overview
Long Name:
C7.1 Marine Auxiliary Engine (U.S. EPA Tier 3 / IMO II)
Name:
C7.1 Tier 3 / IMO II
Brand:
Caterpillar
Status:
Current
Dimensions & Weights
Length
43.1 in / 1095 mm
Power Rating
Power Range
208 bkW (280 bhp) @ 2300 rpm
Engine Specifications
Configuration
In-line 6, 4-stroke-cycle diesel
Dimensions & Weights
Height
35.1 in / 891 mm
Minimum Width
31.4 in / 798 mm
Engine Specifications
Emissions
U.S. EPA Tier 3 / IMO II
emissions certified (commercial),
RCD 2016 compliant, EU Stage IIIA
compliant, CCNR Stage II through
reciprocity with EU Stage IIIA
Dimensions & Weights
Maximum Width
33.5 in / 850 mm
Engine Specifications
Rated Engine Speed
2300 rpm
Dimensions & Weights
Minimum Engine Dry Weight
1609 lb / 730 kg
Engine Specifications
Bore
4.13 in / 105 mm
Dimensions & Weights
Maximum Engine Dry Weight
1676 lb / 760 kg
Engine Specifications
Stroke
5.31 in / 135 mm
Displacement
428 in³ / 7.01 l
Aspiration
Turbocharged-aftercooled
aspiration
Governor
Electronic (A5E2 V2 ECM)
Refill Capacity
Lube Oil System w/Oil filter change:
20 L (5.3 gal)
Oil Change Interval
500 hrs
Cooling
Heat exchanger or keel cooled
Flywheel Housing
SAE No. 03 with SAE
11.5 in flywheel
Rotation
Counterclockwise from flywheel end
SEE HOW C7.1 Tier 3 / IMO II COMPARES AGAINST FREQUENTLY COMPARED PRODUCTS.
Auxiliary Engines
C7.1 Tier 3 / IMO II
- Brand
- Caterpillar
- Status
- Current
- Power Range
- 208 bkW (280 bhp) @ 2300 rpm
- Configuration
- In-line 6, 4-stroke-cycle diesel
- Height
- 35.1 in / 891 mm
- Emissions
- U.S. EPA Tier 3 / IMO II emissions certified (commercial), RCD 2016 compliant, EU Stage IIIA compliant, CCNR Stage II through reciprocity with EU Stage IIIA
- Rated Engine Speed
- 2300 rpm
- Bore
- 4.13 in / 105 mm
- Stroke
- 5.31 in / 135 mm
- Displacement
- 428 in³ / 7.01 l
- Aspiration
- Turbocharged-aftercooled aspiration
- Governor
- Electronic (A5E2 V2 ECM)
- Refill Capacity
- Lube Oil System w/Oil filter change: 20 L (5.3 gal)
- Oil Change Interval
- 500 hrs
- Cooling
- Heat exchanger or keel cooled
- Flywheel Housing
- SAE No. 03 with SAE 11.5 in flywheel
Selected Model
Auxiliary Engines
C4.4 (Electronic)
- Brand
- Cat
- Status
- Current
- Power Range
- 71/81/108/129 bkW @ 1800 rpm, 71/86/108 bkW @ 1500 rpm
- Configuration
- In-line 4, 4-stroke-cycle diesel
- Height
- 40.9 in / 1038 mm
- Emissions
- U.S. EPA Tier 3 certified, EU Stage V certified
- Rated Engine Speed
- 1500/1800 rpm
- Bore
- 4.13 in / 105 mm
- Stroke
- 5 in / 127 mm
- Displacement
- 268 in³ / 4.4 l
- Aspiration
- Turbocharged-aftercooled and turbo only aspiration (Turbocharged aspiration only for 65ekW (71bkW))
- Governor
- Electronic (A5 ECM)
- Refill Capacity
- Lube Oil System w/Oil filter change: 11 L 2.8 gal)
- Oil Change Interval
- 500 hrs
- Cooling
- Heat exchanger, combined circuit keel cooling, or separate circuit keel cooling
- Flywheel Housing
- SAE No. 03 with SAE 11.5 flywheel (126 teeth)
Auxiliary Engines
C9.3 Auxiliary Engine
- Brand
- Caterpillar
- Status
- Current
- Power Range
- 292 bhp - 436 bhp (218 bkW - 325 bkW)
- Configuration
- In-Line 6, 4-Stroke-Cycle Diesel
- Height
- 43 in / 1093 mm
- Emissions
- IMO II, IMO III, U.S. EPA Tier 3, China Stage II
- Rated Engine Speed
- 1,500, 1,800 rpm
- Bore
- 4.5 in / 115 mm
- Stroke
- 5.8 in / 149 mm
- Displacement
- 567.5 in³ / 9.3 l
- Aspiration
- Turbocharged-aftercooled
- Governor
- Electronic
- Refill Capacity
- Lube Oil System w/oil filter change: 24.5 L (6.5 gal)
- Oil Change Interval
- 500 hrs
- Cooling
- Heat exchanger and separate or combined keel cooled options
- Flywheel Housing
- SAE No. 1 (113 teeth)