N855 for Marine

Overview

N855 for Marine

242-358 kW | 325-480 hp

  • Proven legacy in tough commercial marine environments, hard earned over the last 25 years
  • Designed to withstand the challenging conditions commercial marine operators often face; this same reliable, durable power is now available for recreational boating applications, including super yachts and yacht support vessels
  • IMO Tier I certified and many ratings are also IMO Tier II certified
  • Covered by a comprehensive one year warranty and backed by Cummins global service network
  • Built at Cummins India Limited in Pune, India

Specifications


Configuration In-line, 6 cylinder, 4-stroke diesel
Aspiration Turbocharged/Aftercooled
Displacement 14 L (855 in³)
Bore & Stroke 140 x 152 mm (5.50 x 6.00 in)
Rotation Counterclockwise facing flywheel
Fuel System Pressure Time (PT)

Product Dimensions and Weight 
 

Overall Length

mm (in)

1973

(77.68)

Length of Block

mm (in)

1382

(54.41)

Overall Width

mm (in)

915

(36.02)

Overall Height

mm (in)

1587

(62.48)

Overall Weight

kg (lb)

1472

(3245)

Dimensions may vary based on selected engine configuration.

Engine Finder Specifications

Markets
Certification Level N/A
Power 260 - 480 hp / 194 - 358 kW

Ratings

Commercial and Recreational Marine Propulsion Engines (Variable Speed Ratings)

Engine Model

kW

MHP

BHP

Engine Speed (RPM)

Rating Definition

Emissions

NTA855-M

242

330

325

1800

Continuous

IMO2

NTA855-M

298

406

400

1800

Continuous

IMO2

Marine Auxiliary Engines (Fixed Speed Ratings)

Engine Model

kW

MHP

BHP

Engine Speed (RPM)

Rating Definition

Emissions

NT855-DM

209

264

260

1500 (50 Hz)

Prime Power

Not Certified

NT855-DM

231

314

310

1500 (50 Hz)

Prime Power

Not Certified

NT855-DM

242

330

325

1500 (50 Hz)

Prime Power

Not Certified

NT855-DM

254

345

340

1800 (60 Hz)

Prime Power

Not Certified

NT855-DM

265

360

355

1800 (60 Hz)

Prime Power

Not Certified

NTA855-DM

272

370

365

1800 (60 Hz)

Prime Power

Not Certified

NTA855-DM

280

380

375

1500 (50 Hz)

Prime Power

Not Certified

NTA855-DM

283

385

380

1500 (50 Hz)

Prime Power

Not Certified

NT855-DM

295

401

395

1800 (60 Hz)

Prime Power

Not Certified

NTA855-DM

306

416

410

1500 (50 Hz)

Prime Power

Not Certified

NTA855-DM

313

426

420

1800 (60 Hz)

Prime Power

Not Certified

NTA855-DM

358

487

480

1800 (60 Hz)

Prime Power

Not Certified


For more information on marine ratings, click here. For more on marine emissions information, click here.

Features

Engine Design – Robust in-line six cylinder designed for continuous duty operation and long life. Metric O-ring seals and edge molded gaskets eliminate fluid leaks. Full power take-off available from front of the crankshaft. Single-piece piston design with hardened liners and nitride-coated rings for exceptional durability

Fuel System – Full authority Cummins Pressure Timed (PT) fuel system optimizes combustion for enhanced fuel economy as well as reduced emissions and minimal smoke. Premium fuel injectors utilize ceramic components for increased durability

Cooling System – Keel cooled or engine mounted heat exchanger system available. Spin-on Cummins water treatment filters for protection against cooling system corrosion

Exhaust System – Water cooled exhaust manifold reduces emissions and cools engine surface temperatures

Air System – Cummins turbocharger optimized for marine applications. Water pump aftercooling for efficient operation and optimal performance

Lubrication System – Cummins spin-on oil filters for simplified service. Standard capacity (34 L [9 gal]) or large capacity (36 L [9.5 gal]) oil pan available for extended oil change intervals. Prelub system protects engine from damage due to dry starts

Electronics – 24 volt, 100 amp with isolated ground components

Certifications – Complies with IMO Tier II emissions regulations. Certificates of compliance are available from the Indian Register of Shipping. Consult your local Cummins professional for a complete listing of current marine agency approvals for this engine

Optional Equipment

  • Direct mounted front power take-off
  • Duplex lube and fuel filtration
  • Engine room and pilot house instrumentation with analog gauges
  • SAE A and B accessory drives
  • Integral marine gear oil cooler

Brochures Available

Title Bulletin Number Request View  
Commercial Marine Fishing And Tugboat Engines From 325 HP To 800 HP Brochure 4082103 Request View  Download
Marine Commercial Transport Brochure 4082096 Request View  Download
Marine Defense Brochure 4087453 Request View  Download
Marine Defense Brochure – A4 Format 4087463 View  Download
Marine Products Guide 3381946 Request View  Download
N855 Commercial and Recreational Marine Spec Sheet 4087461 View  Download
N855 Commercial and Recreational Marine Spec Sheet – A4 version 4087462 View  Download

Technical Documents Available

Title Bulletin Number View  
Mechanical K/KV/N Wiring Diagram 3349357 View  Download
N/NT/NTA855-M Marine Engine General Datasheet DS-4962 View  Download
N14-M (w/ subsystems) Installation Drawing 3170497 View  Download
N855-M Marine Performance Curve 145 kW (195 hp) @ 1800 RPM M-1177 View  Download
NT855-M Gear Options Marine Installation Drawing 3383880 View  Download
NT855-M Marine Performance Curve 179 kW (240 hp) @ 1800 RPM M-1180 View  Download
NT855-M Marine Performance Curve 224 kW (300 hp) @ 1800 RPM M-1418 View  Download
NT855-M Marine Performance Curve 254 kW (340 hp) @ 1800 RPM M-1915 View  Download
NT855-M Marine Performance Curve 269 kW (360 hp) @ 2100 RPM M-1419 View  Download
NTA855-D(M) Marine Performance Curve 358 kW (480 hp) @ 1800 RPM FR10181 View  Download
NTA855-M Gear Options Marine Installation Drawing 3383883 View  Download
NTA855-M Marine Performance Curve 201 kW (270 hp) @ 1800 RPM M-1179 View  Download
NTA855-M Marine Performance Curve 261 kW (350 hp) @ 1800 RPM M-1399 View  Download
NTA855-M Marine Performance Curve 283 kW (380 hp) @ 1800 RPM M-1916 View  Download
NTA855-M Marine Performance Curve 298 kW (400 hp) @ 2100 RPM M-1400 View  Download