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DCEC L8.9CMII211G Marine Auxiliary Engine

DCEC L8.9CMII211G Marine Auxiliary Engine is a 6-cylinders, 8.9 liters four-strokes engine with 114mm bore and 145mm stroke.

Equipped with Weifu AD fuel pump and RSV governor, engine comes with turbocharger.

The prime power at 1500RPM of DCEC L8.9CMII211G marine auxiliary engine is 155kW.

Based on standard DCEC marine auxiliary engines, SeaMac provides both heat exchanger cooling and keel cooling marine auxiliary 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 auxiliary 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 L8.9CMII211G Marine Engine

  • Leading design and excellent manufacturing technology make the engine more reliable and durable, suitable for high-strength, heavy-duty work under severe working conditions.

  • The cylinder block and cylinder head adopt integrated design to prevent the occurrence of engine water and oil leakage. The parts are about 40% less than other similar engines, and the failure rate is greatly reduced.

  • The cylinder bore adopts a platform mesh honing design, the perfect geometric structure effectively prevents oil leakage, and the use of advanced technologies such as new piston ring components and gasket crimping and molding reduces oil loss.

  • Synchronized with the advanced design and sophisticated manufacturing of CMS in the United States, it is suitable for harsh working conditions and has strong high-intensity and heavy-duty operating capabilities.

Technical Specifications

Engine Model:L8.9CMII211G
Engine Type:6 Cylinders
Displacement:8.9 L
Rated Speed:1500 RPM
Rated Power / Speed:155 kW @ 1500 RPM
Peak Torque:987 N.m @ 1500 RPM
Aspiration Method:Turbocharged/Aftercooled
Emission Standard:N / A
Bore*Stroke:114 mm * 145 mm
Packing Size(L*W*H):N / A
Wet Weight:877 kg
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C

Coming Soon

Engine Model

Peak Torque

Rated Power

Fuel System


L8.9CMII211G987 N.m @ 1500 RPM155 kW @ 1500 RPMHPCRTurbocharged/Aftercooled
L8.9CMII272G1273 N.m @ 1500 RPM 200 kW @ 1500 RPMHPCRTurbocharged/Aftercooled
General Infomation of DCEC L8.9CMII211G Marine Auxiliary Engine
Engine ModelL8.9CMII211GCurve NumberFR96906
Engine ConfigurationD563033MX03CPL CodeCPL5570
Date16-Apr-19Displacement8.9 liter
Bore*Stroke114 mm * 145 mmAdvertised Power155 kW [208 hp] @ 1500 rpm
Fuel SystemHPCRAspirationTurbocharged/Aftercooled
Cylinders6Exhaust TypeDry
Engine SpeedOverload CapacityPrime PowerContinuous Power
Performance Data of DCEC L8.9CMII211G Marine Auxiliary Engine
Prime PowerOverload
Rated Engine Power155 kW [208 hp]171 kW [229 hp]
Governed Engine Speed1500 RPM
Rated HP Production Tolerance3 ±%
Rated Engine Torque987 Nm [728 lbft]1087 Nm [802 lbft]
Low Idle Speed Range Minimum750 rpm
Low Idle Speed Range Maximum800 rpm
Brake Mean Effective Pressure1393 kPa [202 psi]1538 kPa [223 psi]
Compression Ratio17.3:1
Piston Speed7.3 m/sec [1427.5 ft/min]
Firing Order1-5-3-6-2-4
Friction Power12 kW [16 hp]
Steady State Stability Band at Constant Load0.25%
Weight Dry – Engine Only877 kg [1933 lb]
Weight Dry – Engine With Heat Exchanger1001 kg [2207 lb]
1 m sound pressure level – GB/T1859< 93 dB
Jacket Water Aftercooled Engines (JWAC)
Prime PowerOverload
Coolant Flow to Main Cooler (with open thermostat)220 l/min [58 gal/min]
Standard Thermostat Operating Range Start to open71 °C [160 °F]
Standard Thermostat Operating Range Full open83 °C [182 °F]
Heat Rejection to Engine Coolant³100 kW [5692 Btu/min]114 kW [6488 Btu/min]
Emissions (in accordance with ISO 8178 Cycle D2)
Prime PowerOverload
NOx (Oxides of Nitrogen)4.650 g/kwhr
HC (Hydrocarbons)0.450 g/kwhr
CO (Carbon Monoxide)0.100 g/kwhr
PM (Particulate Matter)0.083 g/kwhr
Electrical and Start System
Prime PowerOverload
Voltage24 V
Cold Soak at -18°C (0°F) -Cold Cranking Amperes Rating750 CCA
Maximum Allowable Resistance of Starting Circuit2 Ohms
Min. start temperature without cold starting aid-12 °C [-10 °F]


System Performance Data of DCEC L8.9CMII211G Marine Auxiliary Engine
Prime PowerOverload
LubricationSystemMax. Allowable Oil Temperature (Sump)124 °C [255 °F]
Oil Pan Capacity (OP9582)
Low/High18.9 [22.7] l/l
Min. Oil Pressure at idle speed69 kPa [10 psi]
Maximum Operational Angularity of Oil Pan35 degree
Fuel SystemApproximate Fuel Flow to Pump122 l/hr [32.17 gal/hr]
Maximum Allowable Fuel Supply to Pump Temperature70 °C [158 °F]
Approximate Fuel Flow Return to Tank79 l/hr [20.88 gal/hr]
Maximum Allowable Restriction to Fuel Pump
Clean Filter16 kPa [2.3 psi]
Dirty Filter30 kPa [4.4 psi]
Air System
Intake Manifold Pressure176 kPa [52 in Hg]188 kPa [55.5 in Hg]
Intake Air Flow208 l/sec [440 cfm]216 l/sec [457 cfm]
Heat Rejection to Ambient23 kW [1309 Btu/min]
Exhaust SystemExhaust Gas Flow569 l/sec [1205 cfm]606 l/sec [1284 cfm]
Exhaust Gas Temperature513 °C [954 °F]530 °C [986 °F]
Max. Exhaust Pressure10 kPa [3 in Hg]
Cooling System
Sea Water Pump flow4 ( Discharge Restriction Pressure 40 kPa )6.5 m3 /hr
Pressure Cap Rating (With Heat Exchanger Option)48 kPa [7 psi]
Max. Pressure Drop Across Any External Cooling System Circuit34 kPa [5 psi]


Scopes of Supply of DCEC L8.9CMII211G Marine Auxiliary Engine

Air Intake System1. Air Intake Manifold        Exhuast System1. Exhuast Manifold
2. Air Filter2. Turbocharger
3. N / A3. Exhuast Elbow
Starting System1. Starter Motor        Charging System1. Charging Alternator
2. Starter Rely2. N / A
Lubricating System1. Oil Pump        Fuel System1. Fuel Transfer Pump
2. Oil Filter2. High-Pressure Fuel Pump
3. N / A3. Machanical Governor
4. N / A4. Fuel Filter
Engine Shut-Down System1. Engine Fuel Shut-Off Solenoid        Power Output System1. Flywheel
2. N / A2. Standard Flywheel Housing

Optional Accessories of DCEC DCEC L8.9CMII211G Marine Auxiliary Engine

Air Intake System1. Air Intake Pre-HeaterExhuast System1. Muffler & Bellows
2. Air Intake Pre-Filter2. Flame Trap
3. Air Filter Alarm System3. Spark Arrestor Type Muffler & Bellows
4. N / A4. DPF System
Fuel System1. Coarse FilterEngine Auiliary Accessories1. Hydraulic Oil Pump
2. Fuel Pre-Heater2. Hydraulic Cluch
Starting System1. Manual Magnetic DC ContactorCooling System1. Engine Monitor
2. Dual Ears Flywheel Housing2. Engine Protection System With Alarm System
3. Spring Starter Motor3. Machanical Engine Control Lever Syste
4. Air Starter Motor4. Electric Engine Control Lever System
5. Hydraulic Starter Motor5. N / A
6. Manual Magnetic DC Contactor6. N / A
Power Output System1. Gear Reduction GearboxCooling System1. Coolant Pre-Heater
2. Reverse Gear Box2. Jacket Water Heater
Lubricating System1. Oil Pre-HeaterEngine Mounting System1. Shock Absorber Pad

Committed to providing reliable premium propulsion system and power system for all kinds of ships around the world, SeaMac is a sub-brand of EMAC group that focused on maritime application.
SeaMac’s ranges of products mainly inclduing marine main engine, marine gearbox, marine propellers, marine control lever system, marine auxiliary engine, marine generator set and emergency generator set.
For more information of our marine proplusion and power system products, you are welcome to visit SeaMac homepage:

Modifiable components of DCEC L8.9CMII211G Marine Auxiliary Engine

Air Intake System1. Installation Position of Air FilterStarting System1. 12V Starter Motor for 12V Electric System
2. Upgrade to Heavy-Duty Type Air Fitler2. Upgrading to Specified Brand and Speicifications of Starter Motor
Exhuast System1. Can Modify Installation Position and Direction of TurbochargerCharging System1. 12V Charging Alternator for 12V Electric System
2. Water-Cooled Exhuast Manifold2. Explosion-Proof Charging Alternator
3. Water-Cooled Turbocharger3. Upgrading to Specified Brand and Speicifications of Charging Alternator
Fuel System1. Upgrade to Fuel Fitler That Integrated with Fuel Transfer Pump and Fuel Pre-HearterEngine Auiliary Accessories1. Additional Auxiliary Systems Can Be Added for Special Applications
Engine Shut-Down System1. 12V Solenoid for 12V Electric SystemCooling System1. Can Modify Engine Into Keel Cooling System
2. Explosion-Proof Solenoid2. N / A
Lubricating System1. Oil Pan PositionPower Output System1. Can Modify Size of Flywheel Housing and Flywheel
2. Number of Dipstick2. Dual-Ear Flywheel Housing (For Twin-Starter System)
3. Position of Dipstick Can Choose from 6 Positions3. Some of Models Can Modify Flywheel Housing Into PTO Integrated Type
4. Can Modify Oil Filter to Be Remote Installation4. Engine Have Connecting Port of PTOs, That Able to Provide Power Output
Engine Mounting System1. Can Modify Engine Mouting Bracket

Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.

The picture of Sale Manual showing the accessories and scopes of supply.

Engine Sale Manual

The picture of Installation Drawing showing the accessories and scopes of supply.

Installation Drawing

The picture of Installation Manual showing the accessories and scopes of supply.

Installation Manual

The picture of Operation Manual showing the accessories and scopes of supply.

Operation Manual

The picture of Engine Parts Catalogue showing the accessories and scopes of supply.

Parts Catalogue

The picture of Test Report and Certifcate showing the accessories and scopes of supply.

Report & Certifcate

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