Cummins NTA855 Marine Main Engine

  • NTA855 Marine Engine
  • NTA855 Marine Engine
  • NTA855 Marine Engine
  • NTA855 Marine Engine
  • NTA855 Marine Engine
  • NTA855 Marine Engine

NTA855-M Series engine | 147-450HP

The Cummins NTA855-M Series Marine Main Engine is a 6-cylinder, 14-liter four-stroke engine with a 140 mm (5.5 in) bore and 152 mm (6.0 in) stroke. Equipped with a PT Fuel System and turbocharger, it delivers a prime power range of 147 HP to 450 HP (110 kW to 336 kW) and torque between 1044 N·m and 2612 N·m, ensuring reliable performance for marine applications.

  • Brand: Cummins
  • Origin: China
  • Certification: ISO 9001
  • Model: NT855/NTA855/NTAA855/NTC/QSNT855

Product Description

The Cummins NTA855 is a mechanically controlled, heavy-duty diesel engine engineered for continuous-duty marine propulsion and auxiliary power. Built for long hours and tough conditions, it delivers reliable performance even in environments where electronic systems may not be practical.

Ideal for tugboats, dredgers, sand carriers, and inland barges, the NTA855 offers a dependable balance of durability, ease of maintenance, and global parts availability.This engine features a proven 6-cylinder inline, four-stroke configuration, known for its simplicity and resilience. With turbocharging and aftercooling, it ensures efficient combustion, improved cooling, and optimized fuel use.Delivering 147–450 HP, the NTA855 suits a wide range of marine applications that demand consistent power and mechanical reliability.

As an authorized Cummins dealer, JOZ provides competitive pricing and responsive after-sales service. Our experienced engineering team offers full technical support — including on-site assistance, to help ensure smooth installation and long-term operation.


Key Features & Benefits

Cummins NTA855-M series marine main engine is a 6-cylinder inline, 14-liter four-stroke engine with 140 mm (5.5 in) bore and 152 mm (6.0 in) stroke. CUMMINS NTA855-M series marine main engine equipped with PT Fuel System comes with the turbocharger. The prime power range of the CUMMINS NTA855-M series marine main engine is from 147 HP to 450 HP (110 kW to 336 kW). The torque range of the NTA855-M Series marine main engine is 1044 N.m to 2612 N.m

Cummins NTA855-DM series marine auxiliary engine is a 6-cylinder inline, 14-liter four-stroke engine with 140 mm (5.5 in) bore and 152 mm (6.0 in) stroke. CUMMINS NTA855-DM series marine auxiliary engine equipped with PT Fuel System comes with the turbocharger. The power range of the CUMMINS NTA855-DM series marine auxiliary engine is from 241 HP to 425 HP (180 kW to 317 kW). The torque range of the NTA855-DM Series marine auxiliary engine is 1260 N.m to 2234 N.m.

  • Mechanical Simplicity
    Fully mechanical fuel system (PT type) ensures easy diagnostics and field maintenance without relying on electronic control units — ideal for harsh and remote marine conditions.
  • Built for Long Hours
    Continuous-duty rated with heavy-duty components — forged crankshaft, wet liners, robust block design — for 24/7 high-load operation.
  • Global Support & Parts Availability
    With Cummins service centers and parts networks in over 190 countries, operators benefit from easy access to genuine components and technical support wherever the vessel goes.
  • Efficient Performance
    Delivers high torque at low RPM, helping optimize fuel consumption under load, particularly in towing, dredging, or slow-speed transport conditions.
  • Retrofit & Repower Friendly
    Compact footprint, mechanical interface, and compatibility with standard marine gearboxes (ZF, Advance, Twin Disc) make it ideal for repowering older vessels.

Typical Applications

  • Tugboats operating under constant load
  • Sand & gravel carriers for port construction
  • Dredgers with high torque requirements
  • River transport barges with simple onboard systems
  • Offshore utility boats and service vessels
  • Long-haul fishing vessels operating in developing regions

Proven in marine fleets across Southeast Asia, Africa, the Middle East, and South America.

Technical Specifications of NTA855 Marine Engine

Cummins NTA855 Series Marine Engine
NT855-M147NT855 – M200NT855 – M220NT855 – M240
NT855 – M250NT855 – M270NT855 – M300NTA855 – M350
NTA855 – M400ANTA855 – M400BNTA855 – M450N855-DM240
N855-DM284N855-DM287N855-DM313N855-DM317
NT855-D(M)180NT855-D(M)205NT855-D(M)230NTA855-D(M)240
NTA855-D(M)264NTA855-D(M)284NTA855-D(M)287NTA855-D(M)306
NTA855-D(M)313NTA855-D(M)317 

Installation & Integration Options

  • Flexible Mounting: Suitable for tight engine rooms
  • Gearbox Compatible: Works with most marine transmissions
  • Cooling Choices: Heat exchanger or keel cooling available
  • Custom Options: Painted to specification, pre-wired on request

We also support engine packages with matching auxiliary systems (filters, air intake kits, control panels, etc.)

Support You Can Count On

  • Full Engine Rebuild Kits Available
  • Technical Documentation & Drawings Supplied
  • Remote Commissioning Assistance
  • Genuine Parts Supply Worldwide
  • Fast Shipping for Spare Parts & Overhaul Kits

We understand downtime costs money. That’s why we stock NTA855 components and provide support from quoting to post-sale service.

Pre-Sales Service

  • Inquiry and consulting support.
  • Sample testing support.
  • View Factory.

After-Sales Service

  • Training how to install the machine, training how to use the machine.
  • Engineers available to service machinery overseas.

Transaction Information

  • Minimum order quantity: 1 set
  • Payment method: T/T
  • Supply capacity: 150 units/month
  • Delivery deadline: 30 days
  • Normal packing is Cummins original wooden case(size: L*W*H). When exporting to some special countries, the wooden case will be fumigated. If the container is too thick, we will use PE film to pack or pack it according to customers’ special requests.

General NTA855 Specs

Engine Type:6 Cylinders, in Line
Displacement:14 L
Bore * Stroke:140 mm * 152 mm
Advertised Power:147 – 450 HP @ 1600 – 2100 RPM
Peak Torque:1044 – 1491 N.m @ 1300 – 1500 RPM
Rated Speed:1600 – 2100 RPM
Emissision:Euro II
Aspiration Method:Turbocharged & Water – Air Intercooler
Dry Weight:1258 – 1303 kg
Dimission Standards:1534 mm * 781 mm * 1355 mm

Packing

  • Cummins Engines Packing
  • Cummins Engines Packing

Frequently Asked Questions

Got questions? Here are some of the most common inquiries we receive about the Cummins NTA855 marine engine.

Yes. The continuous-duty version is designed for full-load, non-stop operation — ideal for tugboats, dredgers, and sand barges.

Very easy. Cummins has over 7,000 service locations globally. NTA855 parts are widely stocked across Asia, Africa, and Latin America.

Absolutely. With its mechanical design and compact layout, it’s a go-to option for engine replacement in legacy vessels.

It meets IMO Tier I standards and can be customized to meet regional requirements depending on the build and application.

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