Cummins N855-DM Marine Auxiliary Engine | 317 kW (425 HP)
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Cummins N855-DM Marine Auxiliary Engine | 317 kW (425 HP)
Category:
Power:
Prime: 317 kW (425 HP); Overload: 351 kW (470 HP)
Rating type:
Prime Power/ Overload
Type:
Inline 6-cylinder, 4-stroke diesel
Application:
Marine Propulsion
Packing Size:
2160×1390×1910MM
Weight:
2100KG
HS Code:
840810
Technical Specification of Cummins N855-DM Marine Auxiliary Engine | 317 kW (425 HP)
Engine Model
Cummins N855-DM317
Fuel System
Direct Injection Cummins PT
Rated Power
317 kW (425 HP)
Peak Engine Torque
Prime: 1488 lb.·ft [2017N·m]; Overload: 1646 lb.·ft [ 2232 N·m ]
Rated Speed
1500 RPM
Compression Ratio
14.5:1
Rating Type
Prime Power/ Overload
Fuel Consumption at Rated Speed
83.9 L/h (22.17 gal/h)
Bore
140mm [5.5 in]
Cooling system
Heat exchanger & Sea water pump
Stroke
152mm [6.00in]
Firing Order
Aspriration
Turbocharged / Low-Temperature Aftercooled (LTA)
Dry Weight
1314 kg (2896 lbs)
Displacement
14 L (855 in³)
Emission
IMO Tier II
General Information of Cummins N855-DM Marine Auxiliary Engine | 317 kW (425 HP)
When your vessel’s auxiliary systems demand uninterrupted power, the Cummins N855-DM delivers.
📦 Product Description
This 6-cylinder, 14-liter marine auxiliary diesel engine is purpose-built for medium-sized vessels, including cargo ships, tugs, and offshore support vessels. Rated at 317 kW (425 HP) @ 1500 RPM, it provides continuous-duty performance, even in tropical climates and heavy-load conditions.
Equipped with turbocharging and low-temperature aftercooling (LTA), the N855-DM ensures fuel-efficient combustion, stable electrical output for onboard generators, and IMO Tier II-compliant emissions, meeting international maritime regulations without sacrificing power.
📊 Key Specifications
- Engine Model: Cummins N855-DM317
- Configuration: Inline 6-cylinder, 4-stroke diesel
- Displacement: 14 L (855 in³)
- Bore × Stroke: 140 mm × 152 mm (5.50 × 6.00 in)
- Prime Power (1500 RPM): 317 kW (425 HP)
- Overload Power (110%): 351 kW (470 HP)
- Torque (Prime/Overload): 2017 Nm / 2232 Nm (1488 lb-ft / 1646 lb-ft)
- Compression Ratio: 14.5:1
- Aspiration: Turbocharged / Low-Temperature Aftercooled (LTA)
- Fuel System: Cummins PT Direct Injection
- Fuel Consumption @ 100% Load: 83.9 L/h (22.17 gal/h)
- Fuel Consumption @ 75% Load: 76.8 L/h (20.28 gal/h)
- Fuel Consumption @ 50% Load: 57.5 L/h (15.19 gal/h)
- Fuel Consumption @ 25% Load: 41.0 L/h (10.84 gal/h)
- Exhaust Gas Temp (Turbine Out): 440°C (824°F)
- Air Intake Flow: 333 L/s (705 cfm)
- Dry Weight (Engine Only): 1314 kg (2896 lbs)
- Dry Weight (w/ Heat Exchanger): 1431 kg (3155 lbs)
- Emission Compliance: IMO Tier II (ISO 8178 D2/E2)
✅ Why Choose the N855-DM?
- Optimized for Mid-Sized Vessels: Perfect for tugs, offshore support ships, and cargo vessels needing stable auxiliary power.
- Proven Reliability: The Cummins N-series platform is trusted globally for marine generator applications.
- Efficient Operation: Turbocharged LTA design reduces fuel costs while maintaining consistent output.
- IMO Tier II Compliant: Ready for unrestricted international routes with certified low emissions.
-
Easy Maintenance: Simple inline-6 layout for fast servicing and reduced downtime.
🔧 Technical Highlights
- PT direct injection fuel system ensures precise metering and smooth power delivery
- Low exhaust temperatures extend component life in marine generator applications
- Robust cooling system built to handle warm seawater conditions
-
Compact footprint ideal for retrofit projects or restricted engine rooms
🚢 Applications
- Marine Generator Sets: Continuous onboard power for shipboard systems
- Hydraulic Deck Equipment: Winches, cranes, and pumps
- Emergency & Fire Pumps: Reliable power in critical conditions
-
Auxiliary Electrical Supply: For cargo ships, tugs, and offshore platforms
📦 Product Availability
Available worldwide through Cummins Marine distributors, with options for heat exchanger or keel cooling, marine classification society certification, and integrated control panels.
📦Request a Detailed Quote for Your Needs
Each and every product manufactured is tested, inspected and is guaranteed to meet the performance specitications.
Download of Cummins N855-DM Marine Auxiliary Engine | 317 kW (425 HP) Datasheet
Model
Power
Emission
Datasheet
Drawing
Service Manual
Cummins N855-DM317
Prime: 317 kW (425 HP); Overload: 351 kW (470 HP)
IMO Tier II
Download
Download
Model
Cummins N855-DM317
Power
Prime: 317 kW (425 HP); Overload: 351 kW (470 HP)
Emission
IMO Tier II
Datasheet
Drawing
Download
Service Manual
Download
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