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SDEC SC9D300.21CA2 Marine Engine

SDEC SC9D300.21CA2 marine main engine is a 6-cylinder design, 6-cylinder engines are usually suitable for a large number of boats or applications that require higher torque and power output.

SC9D300.21CA2 has a displacement of 8.8 L, larger displacement means better acceleration performance and handling stability, especially suitable for heavy-duty or high-load working environments.

The Engine has a rated power output of 216 kW, enough to drive large vehicles or provide high performance, which is important for applications that require quick acceleration or long distance runs.

We provide all customers with full life cycle services from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from troubleshooting to maintenance technical support.

Advantages of SC9D300.21CA2 Marine Engine

  • Easy maintenance and high attendance. Integrated design of engine parts, fewer sources of failure, nationwide service network, cheap parts and sufficient supply.

  • Powerful, efficient and fuel-efficient. Four-valve structure, turbocharger matched according to the working conditions of the ship to achieve higher air intake efficiency, Japan Denso electronic control system is adopted, the maximum injection pressure is 2000 bar, the atomization is uniform, and the combustion is sufficient. The practical application has large power margin, excellent emission, low fuel consumption and low operating cost.

  • Compact structure, excellent NVH. Modular design of the engine, small size, easy to arrange the cabin, light weight, low engine noise and vibration.

  • Rich configuration and high comfort. According to the different operating conditions of the marine engine, the configuration of the engine is optimized. Water-cooled supercharger and water-cooled exhaust pipe, flywheel interface, etc., large-capacity oil pan, etc. are optional. The ambient temperature of the engine room is low and the comfort is high.

  • High reliability and good consistency. Machining and assembly lines are controlled by MES production system and guaranteed by SPS system. The selected diesel engine parts are of high quality, high reliability and good consistency.

Technical Specifications

Rated Power/Speed:
216 kW @ 2100 RPM
TC & Intercooled
Exhaust Gas Flow:1420 kg/h
Piston Average Speed:10.08 m/s
Firing Order:1-5-3-6-2-4
Number of Cylinders:6
Compression Ratio:17 : 1
Bore * Stroke:114 mm * 144 mm
Dry Weight:950 kg
Displacement:8.8 L
Dimension (L * W * H):1476 mm * 930 mm * 1237 mm
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C

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Engine Model

Prime Power



SC9D180.15CA1110 kW @ 1500 RPM8.82 LTC & Intercooled
SC9D200.15CA1147 kW @ 1500 RPM8.82 LTC & Intercooled
SC9D220.15CA1162 kW @ 1500 RPM8.82 LTC & Intercooled
SC9D220.18CA1162 kW @ 1800 RPM8.82 LTC & Intercooled
SC9D240.15CA1176 kW @ 1500 RPM8.82 LTC & Intercooled
SC9D250.18CA1184 kW @ 1800 RPM8.82 LTC & Intercooled
SC9D260.15CA1195 kW @ 1500 RPM8.82 LTC & Intercooled
SC9D280.15CA1206 kW @ 1500 RPM8.82 LTC & Intercooled
SC9D280.18CA1206 kW @ 1800 RPM8.82 LTC & Intercooled
SC9D280.21CA1206 kW @ 2100 RPM8.82 LTC & Intercooled
SC9D300.15CA1220kW @ 1500 RPM8.82 LTC & Intercooled
SC9D300.21CA1220 kW @ 2100 RPM8.82 LTC & Intercooled
SC9D300.23CA1220 kW @ 2300 RPM8.82 LTC & Intercooled
SC9D320.18CA1235 kW @ 1800 RPM8.82 LTC & Intercooled
SC9D340.21CA1250 kW @ 2100 RPM8.82 LTC & Intercooled
SC9D200.15CA2144 kW @ 1500 RPM8.8 LTC & Intercooled
SC9D240.15CA2172 kW @ 1500 RPM8.8 LTC & Intercooled
SC9D240.21CA2172 kW @ 2100 RPM8.8 LTC & Intercooled
SC9D250.18CA2180 kW @ 1800 RPM8.8 LTC & Intercooled
SC9D280.15CA2202 kW @ 1500 RPM8.8 LTC & Intercooled
SC9D280.18CA2202 kW @ 1800 RPM8.8 LTC & Intercooled
SC9D280.21CA2202 kW @ 2100 RPM8.8 LTC & Intercooled
SC9D300.15CA2216 kW @ 1500 RPM8.8 LTC & Intercooled
SC9D300.18CA2216 kW @ 1800 RPM8.8 LTC & Intercooled
SC9D300.21CA2216 kW @ 2100 RPM8.8 LTC & Intercooled
SC9D300.23CA2216 kW @ 2300 RPM8.8 LTC & Intercooled
SC9D320.18CA2230 kW @ 1800 RPM8.8 LTC & Intercooled
SC9D340.21CA2245 kW @ 2100 RPM8.8 LTC & Intercooled
SC9D340.23CA2250 kW @ 2300 RPM8.8 LTC & Intercooled
SC9D360.23CA2260 kW @ 2330 RPM8.8 LTC & Intercooled

General Infomation of SDEC-Shanghai Diesel SC9D300.21CA2 Marine Main Engine

Engine ModelSC9D300.21CA2Number of Cylinders6
Rated Power216 kWRated Speed2100 RPM
AspirationTC & IntercooledMax.Torque Point @ 1500 RPM1330 N.m
Max. No-load Stable Speed2310 RPMCompression Ratio17 : 1
Bore * Stroke114 mm * 144 mmDisplacement8.8 L
Piston Average Speed10.08 m / sDry Weight950 kg
Cooling MethodSea and Fresh Water Double Circulation SystemDimensions (L * W * H)1476 mm * 930 mm * 1237 mm

Performance Data of SDEC-Shanghai Diesel SC9D300.21CA2 Marine Main Engine

Firing Order1-5-3-6-2-4Stable Droop10 %
Min. Stable Working Speed650±25Fuel Injection Advance AngleElectric Control
Max. Fuel Inlet Temp45 ℃Max. Fuel Inlet Flow (L/min5.75 L / min
Max. Fuel Return Temp84 ℃Max. Fuel Return Flow4.55 L / min
Intake Pipe Intake Pressure180 kPaAir Intake Flow1350 kg / h
Exhaust Gas Flow1420 kg / hExhaust Gas Temp550
Thermostat Opening Temp82 ℃Thermostat Full Open Temp95 ℃
Max. Allowable Intake Resistance4 kPaMax. Allowable Exhaust Resistance6 kPa

Accessories Specifications of SDEC-Shanghal Diesel SC9D300.21CA2 Marine Main Engine

DynamoRated Power1.5 kW
Rated Voltage28 V
WiringTwo-Wire System
Rated Current55 A
Starter MotorRated Power9 kW
Rated Voltage24 V
RotationClockwise from Drive End
WiringTwo-Wire System
Instrument SystemLow Oil Pressure Alarm Value0.16 MPa
Oil Pressure Low Stop Value0.10 MPa
High Water Temp. Alarm Value95  
Oil Temp. High Alarm Value115
Overspeed Alarm Value115 % of Rated Speed
Overspeed Stop Value120 % of Rated Speed

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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.

What's the Standard Scopes of Supply?

With full ranges of emission standard from Euro 2 to Euro 7, SDEC producing 12 series marine engines, started from 3.9 liter engine, to 15 liter engine, covering the power range of 125HP to 650HP.
SDEC marine engine customize developing configurations for big vehicle OEMs in China, based on each of requirement, SDEC producing dozens of different configuration engines with same engine model number, which only SO-Shop Order will be different with each other, the SO number is the identify number of the engine configuration of each model.
Even with same engine model, different SO number engine can have very different configuration with each other, with different prices. Some of SO-Shop Order is not available for commercial market, such as restricted models (Usually for military specifications).
EMAC offering most common, cost effective models which also able to process the production in SDEC, which usually have following accessories as standard configuration.

Scopes of Supply of SDEC Marine 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

What's the Available Optional Items?

SDEC only provides customize service for the large quantity orders or large OEMs, which means usually the order quantity are higher than 1000 units. For the small quantity engine project, EMAC provides customize services with our own resource and engineer team.
EMAC have rich experience on the customize developing, which provides abundant optional items based on the requirement of each project. The typical optional items are special Prestolite charging alternator, prestolite starter motor, Knorr Air compressor. Valeo air conditioning compressor, ECU output socket set, engine accelerate pedal etc.

Optional Accessories of SDEC marine 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:

What's the Modifiable Items and Scopes?

As explained in the standard scopes of supply, SDEC not able to provide customize developing for small quantity projects or small OEMs, so EMAC helps SME OEMs to provide customize services, not only providing additional optional items, but also provides customize modification services to meet their requirements based on the exisiting engine SO number.
As flexible service ability is our core advantages, EMAC is very experienced and good at providing customize services, the common customize services are as below:
1: AIr Intake System: Change the air intake direction.
2: Air Exhuast System: We are able to change the turbocharger direction as the interaction on installation could be occured, also change change the air exhuast direction.
3: Lubricating System: Modify lubricating system is one of the most common requirement from customer, we can provide flat-type engine oil pan, to lower down total engine height, which usually required for special vehicles. For the standard engine oil pan, we also can change the direction of the engine oil pan.
4: Cooling System: There are lots of options for the engine cooling system, for the engine fan, we can provide customize for the material of engine fan (plastic fan or steel fan), wind direction of the engine fan (blower fan or suction fan ) and types of engine fan (mechanical fan or electric control fan).
5: Power Output System: Most of electronic controlled SDEC marine engines are comes with SAE#1 flywheel housing now, while lots of customers need SAE#2 flywheel because of the housing of transmissio is SAE#2, so we have to provide customzie services for those customer, which need to modify flywheel housing, flywheel and starter motor, we also have PTO integrated type flywheel housing available, which can output the whole power of the engine from the PTO on the flywheel housing, we can also provide modification of the mounting side of the starter motor.
6: Electric System: All of SDEC engines are comes with standard 24V electric system, while some customer need to modify the electric system into 12V, we can also modify the starter motor and alternator into appointed brand or appointed specifications.
EMAC is your reliable professional power system partner, feel free to contact our services team to get detailed information about our standard scopes of supply, optional items and modifiable parts for our SDEC marine engine, we are ready to explore the journey of our cooperation.

How to Order Engine to Replace Your Old Engine?

There are three types of engine replacements demand, type A is to replace the old SDEC engine, the original engine is produced by SDEC, type B is to replace SDEC engine produced in other countries including UK, USA, Mexico, India or Japan Komatsu SDEC, type C is to replace other brands engine or even gasoline engines with SDEC produced engines. The detailed introduction and replacement process are as below:
Type A: Engine Replacement Requirement (Original Engine is SDEC Engine).
This is most simple demand case, you just need to provide us the original engine name plate, and then we can easily check and confirm what exactly you need, and we also ensuring that the engine from us will be 100% same with your original engine. (In some case that the vehicle manufacturing modify the engine on their own, we are not able to supply the parts or the condition that modified by the vehicle manufacturer)
Type B: Engine Replacement Requirement (Original Engine is SDEC Engine but produced in UK, USA or other SDEC engine plant).
EMAC have rich experiences in replace the UK, USA or other engine plant produced engine, with SDEC produced SDEC engines, we required the original engine name plate photo to obtain the related information (at least we will need engine serial number, with engine model name only is useless for us, we are not able to provide quotation with engine model name only for the replacement project), and then we can check out the BOM list and all accessories of your original engine serial number, and then we can check and compare with the BOM list of our SDEC produced engine, choose the most closest SO number engine, and modify the parts that not same with your original engine, we have delivered hundreds of cases of replace the customer's original engine that produced in SDEC UK, USA or other engine plants with SDEC produced engines, you can refer to our video introduction on Youtube:
We can NOT guarantee the engine produced by SDEC is exactly same with your original engine, but we can guarantee that all of engines from EMAC will have no problem with installtion and performance, which all of engines can works very well after replacement.
Type C: Engine Replacement Requirement (Original Engine is other brnad engines even gasoline engines).
EMAC also have rich experiences in replace the engine that not SDEC installed, these engines can be other brands such as Deutz, Caterpillar, Perkins, Komatsu or others, we even had experiences of replace gasoline engine with SDEC produced diesel engines.
This kind of appliaction is more complex and quite risky, EMAC can't do much thing due to lacking of information, the only thing we can guarantee is the performance after replacement, we check and compare the engine performance curve of original engine and our SDEC engine, and then we select the most suitable model for replacement. Due to we are lacking of the installation spaces and related accessories, we will send the both CAD and 3D drawing for our recommend engine model, and then customer have to evaluate the risky of replace the original engine with our engine, especially the risky of space, the possibile interactive when installation, and the risky of modify related coolant pipe, air pipes and wiring harness. Normally this kind of request consuming lots of energy and resource for us to carry on, also quite risky for us, so we will not work on the replacement quantity that below 50 units.
When your requirement is replacement, please tell our customer service team of what type of replacement you need, and provide us original engine name plate, the engine name plate is the necessary material before we start our business negotiations, we will NOT reply to all inquiry that even can't provide engine name plate.

How to Choose the Right SDEC Marine Engine for You?

To choose a suitable engine for truck, bus or special vehicle manufacturer is quite simple, because the buyer is the manufacturer, so usually they are quite flexible with space, pipes and wiring connections.
The following process are the standard process for us to select a suitable engine model for truck, bus or special vehicle manufacturer demand.
Step 1: We need basic information of the required engine, including rated power, rated speed and emission standard of the required engine.
Step 2: EMAC will evaluate the requirement and select the suitable engine model for customer, with engine data sheet, engine performance curve, CAD darwing, 3D model and budgetary quotation provided back to customer.
Step 3: Customer should check and compare the engine data sheet, performance curve and related drawing and confirm all details one by one. Most important thing is confirm the performance curve suitable for the requirement.
Step 4: After engine confirmed, we have to check and confirm the specifications of accessories one by one carefully, like the electric system specifications (12V or 24V), the detailed specifications of starter motor, charging alternator, air compressor, power steering pump, A/C compressor etc.
Step 5: Confirming the accessories positions and connections, customer need to check and confirm all positions are suitable for the project, such as engine fan, turbocharger, oil pan position, and connections of air pipe, coolant pipe, wiring harness etc.
Step 6: After confirming the engine performance, position, connection and specifications of all accessories, we will be able to provide accurate quotation for prototype and batch order. Prototype is strongly recommend to start the cooperation, to avoid the possible problem, risky on the engine with batch order.
1: Technical support including technical training, onsite installation and commissioning services are avaiable with additional chargers.
2: We are able to supply complete powertrain system, including engine, transmission, transfer, axle, suspension etc, engine with transmission is highly recommended, because if we supply both engine and transmission, we can run simulations for the vehicle, which we usually will provide customer a simulation report, with the simulated result of Balanced Maximum Vehilce Speed and Maximum Grade Ability at different speed.
3: EMAC able supply complete chassis that integrate all powertrain system together, which can greatly reduce the manufacturer's design works and reduce the system mismatching risky.

Tips of SDEC Marine Engines!

SDEC is one of 50:50 joint venture of SDEC in China, its official SDEC factory that following high SDEC USA production and quality control standard, the SDEC factory swap every 5 years between appointed employee from SDEC Motor and SDEC. For more details, you can refer to the company introduction of SCEC-SDEC Engine Company.

Started the production of SDEC engines in China in 1980s, SDEC products has been in China for over 40 years, thousands of people have worked for SDEC China and some of them are very skilled experienced engineer, some of them resigned from SDEC to set up their own small workshops or assembly factories that focusing on producing copy SDEC engines.

Price is always not the problem for Chinese suppliers, there are many tickies to lower down the engine prices, such as supply self-rebuild engine as new engine, supply official RECON engine from SDEC as brand new engine, assembly the fake engine with after-market parts, supply lower power model engine and change the name plate etc. You can find plenty of suppliers on with various prices, the classic Chinese business style is tell you that he give you very low price and not make profit, how can you believe a businessman will make business that have no profit? They gave you low price not becuase they share their profit to you?
As a matter of fact, Chinese supplier often make their profit much more higher by selling the low quality copy products as genuine brand new products! Always remember YOU GET WHAT YOU PAID!
The key point of dealing with Chinese supplier, is to find and choose reliable business partner that will not cheat you for short-term business, but with vision of build long-term career and life-time partnership, EMAC is one of the reliable partner that not chasing for short-term high profit, but we cares our decades of good reputation and we working with all business partners not as supplier and customers, but as close friend and brothers.

FAQ of SDEC Marine Engines?

1: What mean by SDEC ?
SDEC is the short name of SDEC Engine Company, take the first letter of each word, it comes with SDEC as short name, for more details about SDEC, you can refer to the company introduction of SDEC-SDEC Engine Company.

2: Does your engines copy products?
This question is quite often from customer that not familiar with SDEC, SDEC have over 20 joint ventures in China now, and 6 of them are engine joint venture, which SDEC owns 50% share of all of those 6 engine plants, so all of the SDEC factories in China are genuine SDEC factory, that following high SDEC USA production and quality control standard. EMAC is the business partner of SDEC, and we are supplying powertrain and engine power pack based on genuine brand new engines from SDEC for all different applications, EMAC is a reliable and professional power system solution provider that offering abundant various options.
3: Why there are so many companies selling SDEC engines?
There are plenty of companies selling SDEC engines in China, especially on the B2B platform, such as, you can find plenty suppliers there with attractive prices, SDEC products has been in China for over 40 years, thousands of people have worked for SDEC China and some of them are very skilled experienced engineer, some of them resigned from SDEC to set up their own small workshops or assembly factories that focusing on producing copy SDEC engines. You should be careful of being cheated by the attractive prices with copy or rebuild products.
4: How can I identify if the engine genuine or not?
SDEC keep working on the updating its identification system, technically, there are serial number on all key components of SDEC engines, including cylinder block, cylinder head, turbochager, fuel pump, starter motor, alternator, you can collecting the serial number (NOT part number), and then call SDEC call service center to identify if all the numbers are matching to the original number or not. EMAC continuously updating the latest SDEC identification system, you are welcome to following our website or keep in touch with our customer services team to get latest information from SDEC .
5: What's the warranty policy for the engines supplied by EMAC?
EMAC following standard SDEC warranty policy, which will update sometimes, you can following us to get the latest warranty policy from SDEC. Generally EMAC only afford the defective parts cots and shipping costs for the warranty claims, labor costs and transportation costs are not covered in the warranty.
However, EMAC is building our own independant after-sales service system now, which aims to build a global service network, with resouces of global repair and engineering network, which we believe can bring all business partner benifit in future, helping all of OEM manufacturers expanding their market into global market without worries of lacking after-sales service network. For more details about our Global Service, you can visiting
6: How about the future parts supply for the engines? Are you able to supply parts?
As the support team of EMAC's business scope, PartMac is our own brand that focusing on genuine parts directly from all brand factories.
All of EMAC’s partners are facing big challenges with sourcing original spare parts in China. Committed to providing truthworthy and professional after-sales support and parts supply, PartMac is a sub-brand of EMAC group that focusing on parts business. Stick to original parts only, PartMac can’t give any solution on CHEAP PARTS, but you don’t need to worry about any quality issues with every single parts from PartMac.

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

Truck 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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