Cummins 6BT5.9-M120 | 120HP Marine Diesel Engine for Boats & Vessels

Specifications

•  Engine Model: 6BT5.9-M120
•  Rating Type: Continuous
• Displacement: 5.9 L
• Rated Engine Power: 90kW (120BHP)
•  Rated Engine Speed: 2200 RPM
• Max Power: 100kW
• Max Power Speed: 2270 RPM
• Idle Speed Setting: 750±100 RPM
• High Idle Speed: 2460 RPM
• Compression Ratio: 17.3:1
• Piston Speed: 8.8 m/sec
• Firing Order: 1-5-3-6-2-4
• Fuel System: WEIFU AD/RSV
• Bore: 102mm
• Stroke: 120 mm
• Weight (Dry) Engine only: 443 kg
• Center of Gravity from Front Face of Block: 391 mm
• Center of Gravity above Crankshaft Centerline: 140 mm

Production Description

• The Dongfeng 6BT5.9-M120 Diesel Marine Engine is a high-performance, turbocharged engine designed for continuous operation. With a displacement of 5.9 liters and six cylinders, this engine delivers 120 BHP at 2200 RPM, making it ideal for a wide range of applications. The engine features a fuel system from WEIFU AD/RSV and is configured with a CPL code revision for optimal performance.

Product Advantages

• High Power Output: The 6BT5.9-M120 engine offers a maximum power output of 100kW at 2270 RPM, ensuring efficient and reliable performance.
• Turbocharged Design: The engine’s turbocharged design enhances power and torque while reducing fuel consumption.
• Robust Construction: With a dry weight of 443 kg and a compression ratio of 17.3:1, this engine is built to withstand the demands of continuous operation.
• Low Maintenance: The engine’s by-pass filtration system is not required, reducing maintenance costs and downtime.

Key Features

• Turbochared Design: Ensures optimal power-to-weight ratio and consistent performance
• Compact Structure: Lightweight (443 kg) and ideal for smaller boats or auxiliary engine bays
• Flexible Installation: Compatible with in-line or vee-drive marine configurations
• Reliable Cooling System: Supports 82–93°C operation with 101.6°C maximum outlet temp.
• Durable Fuel & Lube Systems: Designed for high flow efficiency and robust performance under marine duty.
• Optimized Emissions: Engine meets modern standards for clean diesel operation (NOx data TBD).

Applications

• The Dongfeng Cummins 6BT5.9-M120 Marine Engine is well-suited for marine applications, industrial power generation, and other demanding applications where high power output and reliability are essential.

Product Availability

•  Africa Middle East, Asia Pacific, Europe, Latin America, North America

To better serve our global customers, we also offer worldwide supply and shipping of the Cummins 6BT5.9-M120 Marine Engine, with flexible configuration options based on your vessel’s specifications.

• Available in stock for standard models
• Customization and auxiliary options (gearbox, marine accessories) available upon request
• Our team factory-tests every engine and offers full warranty and technical support.