D Series Marine Engine(Power range:180-259 kW
Description
The D series engine is a new generation diesel engine meticulously crafted by SDEC using advanced European and American engine technology, in conjunction with AVL and SWRI (Southwest Research Institute), and in accordance with North American heavy-duty diesel engine standards. It is an outstanding representative of the technologically advanced mature models with similar displacement in China, and the social inventory of this series of products exceeds 1 million units.
This series (D683) marine diesel engine is developed based on the needs of high-speed boats in China. It has advantages such as compact structure, strong power, good economy, and low vibration and noise. It can meet various application in high-speed patrol boats, yachts, traffic boats, work boats, as well as ships such as passenger ships and ferries, as well as the 180-259 kW marine generator set market.
Specification
Model |
D683/SC9D |
Type |
In-Line Type, Water-Cooled, 4-Stroke, Wet Cylinder Liners |
Bore/Stroke |
114x135mm/114x144mm |
Min. Fuel Consumption |
195g/kW.h |
Starting Method |
Electric Start |
Firing Sequence |
1-5-3-6-2-4 |
Noise |
≤102dB(A) |
Crankshaft Rotation Direction (facing the flywheel) |
Counterclockwise |
Cylinder No. |
6 |
Displacement |
8.3L/8.9L |
Oil Consumption |
0.3g/kW.h |
Turbocharged |
CCS/IMO II |
Flywheel and Flywheel Housing |
D683: SAE2#&11.5#; SC9D: SAE1#&14# |
Engine Overhaul Period |
20000h |
Net Weight |
800kg/950kg |
Dimensions (LxWxH) |
1420x837x1093mm(D683) 1476x930x1237mm(SC9D) |
Product Parameters
- The 6-hole high pressure fuel injector is combined with a w-shaped combustion chamber to optimize air-fuel mixing. Adopting an efficient fuel cooler provides economic application range in a wide power range.
- The designs of wet alloy cast iron cylinder liner, forging reinforced crankshaft, crankshaft bearing and connecting rod bearing with strong bearing capacity, water cooled exhaust manifold and electronic monitoring instrument monitored engine running are used to ensure the safe operation and minimize downtime of the engine.
- Optimized combustion characteristics, coupled with a turbocharger and inter cooling technologies can reduce the pressure rise rate during combustion and result in soft and full combustion.
- High precisely machined parts enables engine operation smooth with low vibration and noise.
- With compact bore spacing, low piston compression height and integrated design of parts, all the accessories are integrated on the cylinder block, making the size greatly reduced with light weight and convenient maintenance.
Why Choose us?
- Competitive Pricing: 15-20% lower than market rates without compromising quality.
- Certified Quality: ISO 9001 certification, authorized Yuchai distributor & service provider.
- End-to-End Solutions: Design, production, installation, and after-sales support.
- Proven Expertise: Serving industries like marine, data centers, telecom, oilfields, hospitals, and government sectors. Clients include China Telecom, COSCO, etc.
- Global Reach: Products exported to Southeast Asia, Africa, the Middle East, and South America.
If you have any needs for our products, please click on our contact information, and we will provide you with comprehensive information on technology, business, after-sales, product configuration and other aspects in the most professional way!
Certifications

FAQ
Q1.What is your MOQ of this item?
A: 1 set
Q2. How long is your delivery time?
A:15-30 days after deposit received.
Q3: What is your terms of payment ?
A: T/T 30% in advance and TT 70% balance paid before shipment.
Q4: What is your warranty period?
A: Our payment terms is 1 year or 1500 running hours whichever comes first. But based on some special project, we can extended our warranty period.
Q5: Do you offer OEM service?
A: Yes
Q6:How is your package?
A:Package with standard export wooden case.
Company Profile

Shanghai Diesel Engine Co., Ltd. (SDEC), with SAIC Motor Corporation Limited as its main shareholder, is a large state-owned high tech enterprise engaged in research and development and manufacture of engines, engine parts and generator sets, possessing a state-level technical center, a postdoctoral working station, world-level automatic production lines and passage cars standards quality assurance system. Its former was Shanghai Diesel Engine Factory that was established in 1947 and was restructured into a stock-shared company in 1993 with shares of A and B.
In its more than 70 years'development, SDEC's products have been used all over the world. SDEC now has nine series of high-quality diesel and natural gas engines, i.e. M, R, H, D, C, E, G ,K and W series. These series engines with power outputs of 50 to 1,800 kW are mainly applied to trucks, buses, construction machinery, generator sets, marine application and agricultural equipment. SDEC is always devoting to constant improvement of product quality and striving to forge a quality-leading supplier of power solution of diesel and new energy in China.
About Cheongfa
Established in 2020, Yangjiang Cheongfa Marine and Genset Power Co., Ltd. specializes in R&D, production, and engineering of diesel genset/gas generator sets for global industries.
We deliver tailored solutions, including silent, containerized, trailer-mounted, and desert-optimized systems, alongside noise/vibration control and emission treatment technologies.
Trusted by clients like China Telecom, Tencent, and CNOOC, our products power sectors ranging from data centers and marine operations to healthcare and environmental protection.
With a footprint in Southeast Asia, Africa, South America, and the Middle East, Cheongfa guarantees reliability through end-to-end quality assurance from design to maintenance.