Generator set, Engine unit and spare parts

info@twinpower.cc

Cummins 6CT8.3-GM129 Marine Auxiliary Engine

Cummins 6CT8.3-GM115 Marine

Cummins 6CT8.3-GM129 Marine Auxiliary Engine

Power:

Prime: 129 kW (173 HP); Standby: 142 kW (190 HP)

Rating type:

Prime Power/ Standby

Type:

6-cylinder, in-line, 4-stroke diesel engine

Application:

Marine Propulsion

Packing Size:

1400* 900* 1100 mm

Weight:

750 KG

HS Code:

840810

Technical Specification of Cummins 6CT8.3-GM129 Marine Auxiliary Engine

Engine Model

Cummins 6CT8.3-GM129

Fuel System

BYC PB/GAC, 24V

Rated Power

129 kW (173 HP) @ 1800 RPM

Peak Engine Torque

222 g / kW.h @ 1800 RPM

Rated Speed

1800 RPM

Compression Ratio

17.3:1

Rating Type

Prime Power/ Standby

Fuel Consumption at Rated Speed

Prime: 34 L/h; Standby: 38 L/h

Bore

114 mm [4.49 in]

Cooling system

Water Cooled

Stroke

135 mm [5.31 in]

Firing Order

1-5-3-6-2-4

Aspriration

Turbocharged

Dry Weight

637 kg

Displacement

8.3 L

Emission

IMO Tier II

General Information of Cummins 6CT8.3-GM129 Marine Auxiliary Engine

Product Description

The Cummins 6CT8.3-GM129 Marine Auxiliary Engine is a robust and fuel-efficient marine diesel engine designed to deliver reliable auxiliary power for vessels of all types. With its 129 kW @ 1800 RPM performance rating, turbocharged aspiration, and proven Cummins engineering, this engine ensures consistent power output, low fuel consumption, and long service life under the toughest marine conditions.

Manufactured by Dongfeng Cummins Engine Co., Ltd., this auxiliary engine is an ideal solution for shipowners, operators, and shipyards seeking dependable onboard power for generators, pumps, and other auxiliary systems.


Specifications

  • Engine Model: Cummins 6CT8.3-GM129
  • Configuration: 6-cylinder, in-line, 4-stroke diesel engine
  • Displacement: 8.3 L
  • Bore x Stroke: 114 mm x 135 mm
  • Compression Ratio: 17.3:1
  • Aspiration: Turbocharged
  • Prime Power: 129 kW (173 HP) @ 1800 RPM
  • Standby Power: 142 kW (190 HP) @ 1800 RPM
  • Continuous Power: 105 kW (141 HP) @ 1800 RPM
  • Fuel Consumption @ 100% load (1800 RPM): 34–38 L/h
  • Fuel System: BYC PB/GAC, 24V
  • Dry Weight: 637 kg
  • Cooling System Capacity: 12.3 L (engine only)
  • Lubrication Oil Capacity: 19 L (minimum required)
  • Exhaust Gas Temperature (turbine out): 515°C
  • Idle Speed Setting: 750–950 RPM
  • Starting System: 12V/24V Electric Start


Product Advantages

  • High Reliability: Backed by Cummins’ proven design and global service network.
  • Fuel Efficiency: Optimized fuel system reduces consumption while maintaining performance.
  • Durability: Heavy-duty components engineered for long service intervals.
  • Compact & Lightweight: Dry weight of only 637 kg, ideal for marine installations.
  • Easy Maintenance: Standardized parts and global availability of Cummins service support.


Key Features

  • Turbocharged 6-cylinder in-line engine
  • Rated power output of 129 kW at 1800 RPM
  • Robust lubrication and cooling systems for marine duty
  • Compliance with ISO 8178 Cycle D2 emission standards
  • Reliable cold-start capability (-12°C unaided start)
  • Designed for continuous marine auxiliary power applications


Applications

The Cummins 6CT8.3-GM129 is widely used in:

  • Marine auxiliary generator sets
  • Shipboard pumps and compressors
  • Cargo vessels, bulk carriers, and tankers
  • Offshore support vessels and fishing fleets
  • Passenger ferries and workboats


Product Availability

The Cummins 6CT8.3-GM129 Marine Auxiliary Engine is available for global supply through TPGC Power. With ready stock and fast shipping options, we ensure that shipowners and marine operators can access reliable auxiliary power solutions without delay.

For inquiries, technical support, or quotations, please contact our sales team.

Download of Cummins 6CT8.3-GM129 Marine Auxiliary Engine Datasheet

Model

Power

Emission

Datasheet

Drawing

Service Manual

Cummins 6CT8.3-GM129

Prime: 129 kW (173 HP); Standby: 142 kW (190 HP)

IMO Tier II

Download

Download

Model

Cummins 6CT8.3-GM129

Power

Prime: 129 kW (173 HP); Standby: 142 kW (190 HP)

Emission

IMO Tier II

Datasheet

Drawing

Download

Service Manual

Download

Related Products

Cummins L8.9CMII272G Marine

Cummins L8.9CMII272G Marine Auxiliary Engine

Power: Prime: 200 kW (268 hp); Overload: 220 kW (295 hp)

Rating Type: Prime Power/ Overload

Packing Size: N/A

Weight: 877KG

HS Code: 840810

Cummins L8.9CMII272G Marine

Cummins L8.9CMII211G Marine Auxiliary Engine

Power: Prime: 155 kW (208 hp); Overload: 171 kW (229 hp)

Rating Type: Prime Power/ Overload

Packing Size: N/A

Weight: 877KG

HS Code: 840810

Cummins 6CT8.3-GM115 Marine

Cummins 6LTAA8.9-GM200 Marine Auxiliary Engine

Power: Prime: 200 kW (268 HP); Standby: 220 kW (295 HP)

Rating Type: Prime Power/ Standby

Packing Size: 1400*900*1100 mm

Weight: 750 KG

HS Code: 840810

Cummins 6CT8.3-GM115 Marine

Cummins 6CTA8.3-GM175 Marine Auxiliary Engine

Power: Prime: 175 kW (235 HP); Standby: 193 kW (259 HP)

Rating Type: Prime Power/ Standby

Packing Size: 1400*900*1100 mm

Weight: 750 KG

HS Code: 840810

Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “@twinpower.cc”. 

Thank you for reaching out!

We'll get back to you as soon as possible. For urgent matters, you’re welcome to contact us directly at info@twinpower.cc.