600-800HP Yuchai Inboard Motor Yc6td Marine Diesel Engine for Yachts Boat

• Customization: Available
• After-sales Service: Overseas Third-Party Support Available
• Warranty: 1 Year or 1500 Running Hours Which Come First
• Model NO.: YC6TD/YC6T
• Ignition Mode: Electric Ignition
• Speed: High Speed
• Cooling Cylinder: Water-Cooled
• Intake Pressure Impulse: Turbo-Charged
• Piston Movement: Reciprocating
• Fuel: Diesel
• Number of Strokes: Four-Stroke
• Cylinder Arrangement Form: L
• Number of Cylinders: 4-Cylinder
• Type: Combustion Engine
• Condition: Brand New
• Power Range: 279kw~588kw,380HP~800HP
• Displacement: 19.59L/16.35L
• Certificate: CCS
• OEM: Acceptable
• Transport Package: Wooden Case
• Specification: 1971x1124x1624mm, 1986x1319x1696
• Trademark: Yuchai
• Origin: China
• HS Code: 8408100000
• Production Capacity: 500 Sets Per Month

Product Description

YUCHAI YC6TD/YC6T Series Marine Diesel Engine (Power range: 279kW~588kW,380HP~800HP)

Specification

YC6TD/YC6T Integrated the advanced technology of Germany, America and Japan.YC6T is the new generation engine especially developed to meet the requirements of vessels. It is ideal for powering various kinds of vessels. It is used as the ideal power for 250-400kW auxiliary genset.

Reliability and durability

1. The development of product is carried out with rigorous mechanical engineering development accreditation standards, durability bench test accumulated for 20000 hours.
2.  Engine block manufactured from alloy cast iron offers higher strength. 
3. Forged steel crankshaft improves fatigue strength and resistance to wear.
4. A cylinder head is respectively bolted to the top of each bank of cylinder for ease of maintenance and repair; Cylinder head bolts are evenly spaced and positioned, which is better able to withstand forces evenly.
5. Valve timing mechanism, camshaft is placed in the upper part of cylinder block,short and thick push rod and roller tappet, so as to achieve higher reliability.

Fuel economy

1. Four-valve technology increases the flow areas of air by a wide margin, so as to realize better atomization condition and more intense combustion.
2. Turbocharged and intercooled & electronic combined pump technology.precise electronic control ensure full combustion.
3. Holst turbocharger/lian xin turbocharger, wider fuel economy area.
4. Mechanical losses are reduced dramatically more than 15%, and less air pumping losses and consumption.
5. Fuel consumption is reduced by 10-15% compared with engines of same power.

Safety and comfortability

1. Four-valve technology reduces effectively intake and exhaust noises.
2. Rear positioned gear chamber and advanced point-line gear-meshing technology are adopted to lower mechanical noise of transmission system in further.

Detailed Photos

 

 

Product Parameters

Items	YC6TD Series Marine Diesel Engine
Model	YC6TD800L-C20	YC6TD760L-C20	YC6TD650L-C20	YC6TD600L-C20
No. of cylinders - Bore x Stroke(mm)	6-152x180
Displacement (L)	19.59
No. of valves per cylinder	4
Intake way	Turbo-charged & inter-cooled
Continuous power/speed (kW(Ps)/r/min)	588(800)/1800	559(760)/1800	478(650)/1800	441(600)/1500
One-hour power/speed (kW(Ps)/r/min)	646.8(880)/1858	614.9(835)/1858	525.8(715)/1858	485.1(660)/1548
Min. specific fuel consumption (g/(kWh))	≤195
Certificate	ZC,CCS,EIAPP,IMO TIER II
Overall dimensions(LxWxH) (mm)	1986x1319x1696
Net Weight (kg)	2200

 

Items	YC6T Series Marine Diesel Engine
Model	YC6T650L-C28	YC6T540L-C28	YC6T480L-C28	YC6T450L-C28	YC6T380L-C28
No. of cylinders - Bore x Stroke(mm)	6-145x165			6-145x165
Displacement (L)	16.35			16.35
No. of valves per cylinder	4			4
Intake way	Turbo-charged & inter-cooled			Turbo-charged & inter-cooled
Continuous power/speed (kW(Ps)/r/min)	478(650)/1800	396(540)/1800	352(480)/1800	330(450)/1500	279(380)/1200
One-hour power/speed (kW(Ps)/r/min)	526(715)/1858	435.6(595)/1858	387.2(530)/1858	363(495)/1548	306.9(420)/1239
Min. specific fuel consumption (g/(kWh))	≤205			≤205
Certificate	ZC,CCS,EIAPP,IMO TIER II			ZC,CCS,EIAPP,IMO TIER II
Overall dimensions(LxWxH) (mm)	1971x1124x1624			1971x1124x1624
Net Weight (kg)	1980			1980

Related Products

 

YUCHAI MARINE COMMERCIAL PROPULSION PRODUCT LINE(Main Engine)
Engine Model	Rated power		Rated speed	Rating	Engine Model	Rated power		Rated speed	Rating
	kW	Ps	r/min			kW	Ps	r/min
YC16VCX4000L-C20	2940	4000	1500	R1	YC6TD760L-C20	559	760	1800	R1
YC16VCX3600L-C20	2646	3600	1350	R1	YC6TD650L-C20	478	650	1800	R1
YC16VC3000L-C20	2206	3000	1500	R1	YC6TD600L-C20	441	600	1500	R1
YC16VC2700L-C20	1985	2700	1350	R1	YC6T650L-C28	478	650	1800	R1
YC16VC2400L-C20	1764	2400	1200	R1	YC6T540L-C28	396	540	1800	R1
YC12VC2200L-C20	1618	2200	1500	R1	YC6T480L-C28	352	480	1800	R1
YC12VC2000L-C20	1470	2000	1500	R1	YC6T450L-C28	330	450	1500	R1
YC12VC2000L-C23	1470	2000	1350	R1	YC6T380L-C28	279	380	1200	R1
YC12VC1800L-C20	1323	1800	1200	R1	YC6K560L-C20	412	560	1800	R2
YC8CAX2200L-C20	1618	2200	1000	R1	YC6K520L-C20	382	520	1800	R2
YC8CAX2000L-C20	1470	2000	1000	R1	YC6K490L-C20	360	490	1500	R2
YC8CL1800L-C20	1324	1800	1000	R1	YC6K450L-C20	331	450	1500	R1
YC8CL1600L-C20	1176	1600	1000	R1	YC6K460L-C20	338	460	1800	R2
YC8CL1500L-C20	1103	1500	1000	R1	YC6K420L-C20	309	420	1500	R1
YC8CL1400L-C20	1029	1400	1000	R1	YC6MJ500L-C20	368	500	2100	R2
YC6CA1600L-C20	1176	1600	1000	R1	YC6MJ450L-C23	330	450	2100	R2
YC6CA1400C	1029	1400	1000	R1	YC6MJ410L-C23	300	410	1800	R2
YC16VTD-CM	1985	2700	2100	R3	YC6MJ365L-C23	267	365	1500	R1
	1764	2400	2100	R3	YC6MK410L-C20	300	410	2100	R2
	1655	2250	1900	R1	YC6MK350L-C23	257	350	1800	R1
	1545	2100	1800	R1	YC6MK320L-C23	235	320	1800	R1
	1398	1900	1600	R1	YC6MK300L-C24	219	300	1500	R1
YC6CL1200L-C20	882	1200	1000	R1	YC6MK280L-C23	205	280	1500	R1
YC6CL1135L-C20	835	1135	1000	R1	YC6MK260L-C23	192	260	1500	R1
YC6CL1035L-C23	760	1035	1000	R1	YCA08320L-C20	235	320	2300	R2
YC6CL960L-C23	706	960	1000	R1	YCA08300L-C20	219	300	2000	R2
YC6C1100L-C20	810	1100	1500	R1	YCA08280L-C20	206	280	1800	R1
YC6C960L-C23	706	960	1350	R1	YCA08260L-C23	191	260	1800	R1
YC12VTD-CM	1470	2000	2100	R3	YCA08240L-C20	176	240	1500	R1
	1434	1950	1950	R2	YCA08220L-C24	163	220	1500	R1
	1398	1900	1900	R2	YC4A220L-C20	162	220	2300	R3
	1325	1800	1800	R2	YC4A200L-C20	147	200	2300	R3
	1176	1600	1600	R1	YC4A165L-C20	120	165	1800	R1
YC6TF1000L-C20	735	1000	1500	R1	YC4A120L-C20	90	120	1500	R1
YC6TF900L-C20	660	900	1500	R1	YC4A140Z-C20	103	140	2300	R2
YC6TF850L-C20	625	850	1500	R1	YC4A120Z-C20	90	120	2000	R2
YC6TF820L-C20	603	820	1350	R1	YC4A100Z-C20	75	100	1800	R1
YC6TF720L-C20	530	720	1200	R1	YC4A70Z-C20	53	70	1500	R1
YC6TD800L-C20	588	800	1800	R1	YC4A55Z-C20	40	55	1500	R1

YUCHAI MARINE GENSET PRODUCT LINE
Engine Model	Generator set	kW	Hz	Rating
YC4A55Z-C22	CCFJ30J-W4	660	50	PRP
YC4A85Z-C22	CCFJ50J-W3	625	50	PRP
YC4A110L-C22	CCFJ64J-W2	588	50	PRP
YC4A120L-C22	CCFJ75J-W2	550	50	PRP
YC4A145L-C22	CCFJ90J-W1	450	50	PRP
YC4A165L-C22	CCFJ100J-W3	396	50	PRP
YCA08200L-C22	CCFJ120J-W	368	50	PRP
YCA08240L-C22	CCFJ150J-W2	330	50	PRP
YC6MK300L-C25	CCFJ180J-W1	360	50	PRP
YC6MK330L-C22	CCFJ200J-W2	300	50	PRP
YC6MJ410L-C24	CCFJ250J-W2	125	50	PRP
YC6K490L-C20	CCFJ300J-W	100	50	PRP
YC6TD600L-C20	CCFJ350J-W	80	50	PRP
YC6TD655L-C20	CCFJ400J-W1	63	50	PRP
YC6TF815L-C24	CCFJ450J-W	57	50	PRP
YC6TF815L-C24	CCFJ500J-W1	50	50	PRP
YC6TF980L-C22	CCFJ600J-W2	36	50	PRP

Continuous Duty (R1)	Operating Conditions: Continuous use under constant load. Load Factor: 80-100% average. Annual Usage: Unlimited operating time. Typical Applications: Cargo ships, tugboats, trawlers, deepwater river tugs.
Heavy Duty (R2)	Operating Conditions: Variable load with intermittent full-load operation. Load Factor: 40-80% average. Full-Load Limits: Full-load operation ≤80% of total runtime; nominal power limited to ≤8 hours within any 12-hour period. Annual Usage: ≤5,000 hours. Typical Applications: Medium/offshore trawlers, purse seiners, gillnetters, ferries, passenger vessels.
Medium Continuous Duty (R3)	Operating Conditions: Continuous variable load with reduced-speed full-load phases. Load Factor: 20-80% average. Full-Load Limits: Full-load operation ≤50% of total runtime; nominal power limited to ≤6 hours within any 12-hour period. Speed Reduction: ≥10% below rated speed during full-load operation. Annual Usage: ≤3,000 hours. Typical Applications: Water-skiing ferries, high-speed fishing vessels, near-shore service boats, displacement yachts, cruise ships, coastal cargo vessels with cyclic speed/load variations.
Prime Power (PRP)	Load Factor: ≤80% average. Overload Capacity: 10% overload allowed for 1 hour within any 12-hour period. Annual Usage: Unlimited operating time.

 

Certifications

 

Company Profile

 

About Guangxi Yuchai Machinery Co., Ltd.

Founded in 1992, Guangxi Yuchai Machinery Co., Ltd. (Yuchai) is the first Chinese-foreign joint venture in China's domestic industry to be listed overseas. Headquartered in Yulin, Guangxi Zhuang Autonomous Region, Yuchai operates 11 subsidiaries with production bases strategically positioned across Guangxi, Jiangsu, Anhui, and Shandong.

As a leading internal combustion engine manufacturing base in China, Yuchai offers a comprehensive product portfolio with broad industrial applications. Boasting an annual production capacity of 600,000 engines and sales revenue exceeding CNY 20 billion, we are dedicated to delivering high-performance solutions to global markets.

Our Mission: "Creating Customer Value, Empowering Better Lives"

Yuchai collaborates closely with partners to share market opportunities, technological advancements, and product innovations. By fostering synergy among OEMs, dealers, service providers, and suppliers, we drive mutual growth and achieve sustainable win-win outcomes.

Efficient and Energy-Saving Yuchai Marine Engines
Yuchai's marine engines deliver power outputs ranging from 25 kW to 2,940 kW (35 HP to 4,000 HP), fully compliant with China's Tier I and Tier II Marine Emission Standards. Certified by the world's leading classification societies, these engines are renowned for exceptional durability, reliability, and fuel efficiency. They are widely deployed across diverse marine applications, including transport vessels, engineering ships, fishing boats, passenger ferries, commercial craft, and luxury yachts.
 

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.
CONTACT  US
For inquiries or further information, please do not hesitate to contact us. Our expert team is committed to providing prompt and tailored assistance. Thank you for your interest !