Power Rating
| Power Range | 280 bhp - 425 bhp (209 bkW - 317 bkW) 280 bhp - 425 bhp (209 bkW - 317 bkW) |
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Commercial Propulsion Engines C7.1 Tier 3 / IMO II
Request A Price Find DealerKey Specs
- Power Range
- 280 bhp - 425 bhp (209 bkW - 317 bkW)
- 280 bhp - 425 bhp (209 bkW - 317 bkW)
- Speed Range
- 2300 - 2700 rpm
- 2300 - 2700 rpm
- Emissions
- U.S. EPA Tier 3, IMO II, RCD II, China II
- U.S. EPA Tier 3, IMO II, RCD II, China II
Features At A Glance
- 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
Product Specifications for C7.1 Tier 3 / IMO II
Engine Specifications
| Speed Range | 2300 - 2700 rpm 2300 - 2700 rpm |
| Emissions | U.S. EPA Tier 3, IMO II, RCD II, China II U.S. EPA Tier 3, IMO II, RCD II, China II |
| Configuration | In-line 6, 4-stroke-cycle diesel In-line 6, 4-stroke-cycle diesel |
| Displacement | 428 in³ 7.01 l |
| Aspiration | Turbocharged-aftercooled Turbocharged-aftercooled |
| Governor | Electronic (A5E2 V2 ECM) Electronic (A5E2 V2 ECM) |
| Flywheel Housing | SAE No. 03 SAE No. 03 |
| Bore | 4.13 in 105 mm |
| Stroke | 5.31 in 135 mm |
| Refill Capacity | 20 L (5.3 gal) 20 L (5.3 gal) |
| Oil Change Interval | 500 hrs 500 hrs |
| Rotation | Counterclockwise from the flywheel end Counterclockwise from the flywheel end |
| Cooling | Heat exchange or keel cooled Heat exchange or keel cooled |
Dimensions & Weights
| Dry Weight | 1676 lb 760 kg |
| Height | 34.5 in 876 mm |
| Length | 43.1 in 1095 mm |
| Width | 31.4 in 798 mm |
C7.1 Tier 3 / IMO II Standard Equipment
STANDARD EQUIPMENT
- Water-cooled turbocharger and exhaust manifold
- Common rail fuel system
- Corrosion-resistant sea water aftercooler
- Closed crankcase ventilation system
- Starter motors - 12V or 24V
- Fuel cooler
- Integral engine oil cooler
- Vibration damper and guard
- Electric fuel priming pump
- Self-tensioning multi-vee alternator drive belt
- Gear-driven seawater pump (rubber impeller)
- Fin and tube-type jacket water heat exchanger
- Front and rear engine mounting brackets
C7.1 Tier 3 / IMO II Optional Equipment
OPTIONAL ATTACHMENTS
- Marine Classification Society (MCS) Approval ABS, BV, CCS, CRS, *DNV-GL, IRS, LR, Class NK, PRS, RINA (*DNV-GL approval available for keel-cooled engines only)
- SOLAS double wall high-pressure fuel lines
- Engine mounted bilge pumps and auxiliary water pumps with electromagnetic clutch
- Engine-mounted secondary alternator - 24V 55 amp or 12V 100 amp
- Analogue gauge displays
- Transmission gear oil cooler (engine mounted)
- Glow plugs
- Jacket water heater
- Various 5" and 6" water cooled exhaust elbow configurations
- Cabin heater (calorifier) connections
- Right-hand and high-level left-hand oil dipsticks
- Mechanical throttle converter for repower
See how C7.1 Tier 3 / IMO II compares against frequently compared products.
Marine Power Systems
C7.1 Tier 3 / IMO II
Selected
- Power Range
- 280 bhp - 425 bhp (209 bkW - 317 bkW)
- 280 bhp - 425 bhp (209 bkW - 317 bkW)
- Speed Range
- 2300 - 2700 rpm
- 2300 - 2700 rpm
- Emissions
- U.S. EPA Tier 3, IMO II, RCD II, China II
- U.S. EPA Tier 3, IMO II, RCD II, China II
Marine Power Systems
C9.3 ACERT
- Power Range
- 375-476 bhp (280-355 bkW)
- 375-476 bhp (280-355 bkW)
- Speed Range
- 1800, 2100, 2300 rpm
- 1800, 2100, 2300 rpm
- Rated Engine Speed
- 1800, 2100, 2300 rpm
- 1800, 2100, 2300 rpm
Marine Power Systems
C12
- Power Range
- 340-490 bhp (254-366 bkW)
- 340-490 bhp (254-366 bkW)
- Speed Range
- 1800-2300 rpm
- 1800-2300 rpm
- Emissions
- IMO I, IMO II
- IMO I, IMO II
Use the comparison tool to compare detailed specs of Cat and competitor models.
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C7.1 High Performance Propulsion Engine
Meet the new C7.1 Commercial Propulsion Engine
C7.1 Marine Propulsion Engine Walkaround
