Cummins 6BT5.9-M120 Marine Engine and Parts

Cummins 6BT5.9-M120 marine main engine is a 6-cylinder in-line, 5.9-liter four-stroke engine with a 102mm bore and 120mm stroke. It is equipped with a Weifu AD fuel pump and RSV governor and comes with a turbocharger. The prime power at 2200RPM of DCEC 6BT5.9-M120 marine main engine is 120HP.

Based on standard DCEC marine main engines, Hawks Parts provides both heat exchanger cooling and keel cooling marine main engines. we also offer a complete propulsion system, including a marine engine, gearbox, shaft, and propeller, as a complete power system. SeaMac provides full life cycle services for all its customers, from design to power system supply, from installation to commissioning, and from after-sales service training to spare parts supply, troubleshooting, and overhaul technical support.

All DCEC marine main engines come with a dry-type exhaust system, which includes a dry-type exhaust manifold and dry-type turbocharger. Hawks Parts provides upgrading services for water-cooled exhaust systems, modifying dry-type exhaust systems into water-cooled exhaust systems, which are often requested by passenger boat projects.

Advantages of 6BT5.9-M120 Marine Engine:

• Leading design and excellent manufacturing technology enhance engine reliability and durability, suitable for high-strength, heavy-duty work under severe conditions.
• The integrated design of the cylinder block and cylinder head prevents engine water and oil leakage. With about 40% fewer parts compared to other similar engines, the failure rate is significantly reduced.
• The cylinder bore adopts a platform mesh honing design, effectively preventing oil leakage. Advanced technologies such as new piston ring components and gasket crimping and molding reduce oil loss.

6BT5.9-M120 – General Information

Model: Cummins 6BT5.9-M120

Type: 6 Cylinders in Line

Displacement: 5.9 L

Bore * Stroke: 102 * 120

Net Weight (with flywheel & alternator): 432 Kg

Overall Dimension: 1100mm*750mm*988mm

Manufacture Plant: Dongfeng Cummins Plant

6BT5.9-M120 – Performance Data

Rated Power/Speed: 98 kW/120HP

Rated Speed: 2200 rpm

Max Torque/Speed: 430 N.m @ 1600 rpm

Torque/Rated Speed: 391 N.m @ 2200 rpm

Low Idle Speed: 750±100 rpm

Fuel Consumption (Running Speed): ≤263 g/kW.hr

6BT5.9-M120 – Technical Specification

Aspiration: Turbocharged

Fuel System: Wuxi Weifu AD Pump/RSV Governor

Starting System: Electrical Start (12V/24V)

Governor Type: Mechanical Control

Lowest Starting Temp Without auxiliary system: -12℃

Engine Cooling Fluid Volume: 9.9 L

Cooling Method: Sea water pump, Heat exchanger, Water cooled

Cummins Engine Series