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DCEC 6BT5.9 Marine Main Engine

DCEC 6BT5.9 series marine main engine is a 6-cylinders in line, 5.9 liters four-strokes engine with 102 mm bore and 120 mm stroke. DCEC series marine main engine equipped with Weifu fuel pump and RSV governor. The prime power range of DCEC 6BT5.9 series marine main engine is from 120 HP to 150 HP.

DCEC marine main engines have different configurations which have different power output, with code T in the engine model name means turbocharged engine, code TA in the engine model means turbocharge with water-air intercooler and code TAA in the engine model means turbocharge with air-air intercooler. Based on standard DCEC marine main engines, SeaMac provides both heat exchanger cooling and keel cooling marine main engines, we also provide complete propulsion system that including marine engine, gearbox, shaft, propeller as complete power system. SeaMac provides full life cycle services for all our customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support. All of DCEC marine main engine are comes with dry type exhaust system, which means dry type exhaust manifold and dry type turbocharger, SeaMac provides upgrading services for water-cooled exhaust system, which modify dry type exhaust system into water-cooled exhaust system, which are quite important and often requested by passenger boat projects.

Advantages of 6BT5.9 Marine Engine

1. The integration design of cylinder block and cylinder head prevents the engine from water and oil leakage. The parts are about 40% less than engines of the same type, and the failure rate is greatly reduced.

2. Advanced design and high-quality manufacturing, adaptable to severe operating conditions, high strength, and reliable operation under heavy load.

3. The three-stage filter ensures balanced particle dispersion, protects main components of the fuel system and maximizes engine life.

4. Holset supercharger with integral wastegate offers low-speed response and dynamic performance.

DCEC 6BT5.9 Series Marine Main Engine

This list including all models of DCEC 6BT5.9 Series Marine Main Engine.
Click here to find marine engines by type (Fuel System & Power Range).

DCEC 6BT5.9-M120 Marine Engine

DCEC 6BT5.9-M120 Marine Engine

Rated Power: 120HP @ 2200 RPM
Max. Torque: 430N.m @ 1600 RPM
Fuel Pump: Weifu AD Pump
Governor: RSV Mech.
Aspiration: Turbocharger

DCEC 6BTA5.9-M150 Marine Engine

DCEC 6BTA5.9-M150 Marine Engine

Rated Power: 150 Hp @ 2200 RPM
Max. Torque: 616 N.m @ 1400 RPM
Fuel Pump: Weifu AD Pump
Governor: RSV Mech.
Aspiration: TC & Water-Air Intercooler

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Sales Team


Generator Engine - Mr. Haden Wu

Marine Engine - Mrs. Hailey Tang

Automotive Engine - Mr. Wells Luo

Industrial Engine - Mrs. Luna Fu

Pump Engine - Miss. Zora Zhou

Engine Parts-Miss. Nora

Sales Director - Mr. Jasper Lee      

Service Team


Technical Service - Mr. Vin Hu

Customer Service - Mrs. Wendy Fu

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